Mathematics Jss 2 Lagos State Ministry Of Education (Edvi)
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The product of 0.017 and 100 is ___
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A. 0.00017
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B. 0.0017
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C. 0.017
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D. 1.7
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This Mathematics quiz, designed for JSS 2 students in Lagos State under the EDVI curriculum, assesses basic arithmetic and algebraic skills. Students tackle problems involving decimal multiplication, number theory, percentage conversion, place value understanding, and scientific notation.
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- 2.
John thinks of a number. 18 is subtracted from the number, the result gives – 2. What is the number?
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A. 14
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B. 16
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C. 18
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D. 20
Correct Answer
A. B. 16Explanation
If 18 is subtracted from the number and the result is -2, it means that the number must be 16. This is because when 18 is subtracted from 16, the result is -2.Rate this question:
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- 3.
Express 20% as a decimal number.
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A. 2.00
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B. 0.5
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C. 0.2
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D. 0.05
Correct Answer
A. C. 0.2Explanation
To express a percentage as a decimal, you divide the percentage by 100. In this case, 20 divided by 100 equals 0.2. Therefore, the correct answer is C. 0.2.Rate this question:
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- 4.
The value of the 4 in 26.645 is ___
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A. 4 thousandth
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B. 4 hundredths
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C. 4 tenths
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D. 4 units
Correct Answer
A. B. 4 hundredthsExplanation
The value of the 4 in 26.645 is 4 hundredths. In the decimal number system, each digit to the right of the decimal point represents a specific place value. The digit 4 is in the hundredths place, which means it represents 4 out of 100 parts of a whole.Rate this question:
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- 5.
Convert 1/3 to decimal fraction and give your answer to 4 decimal places.
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A. 0.3330
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B. 0.3333
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C. 0.3334
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D. 0.4444
Correct Answer
A. B. 0.3333Explanation
The decimal representation of 1/3 is 0.3333.Rate this question:
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- 6.
Express 0.0001 in standard form.
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A. 1 x 104
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B. 1 x 103
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C. 1 x 10-3
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D. 1 x 10-4 ​​​​​​​
Correct Answer
A. D. 1 x 10-4 ​​​​​​​Explanation
The standard form of a number is written as a decimal multiplied by a power of 10. In this case, the number 0.0001 can be expressed as 1 x 10-4, where 10 is raised to the power of -4. This means that the decimal point is moved 4 places to the left, resulting in a smaller number. Therefore, the correct answer is D. 1 x 10-4.Rate this question:
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- 7.
The following are polygons EXCEPT ___
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A. Circle
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B. quadrilateral
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C. hexagon
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D. heptagon
Correct Answer
A. A. CircleExplanation
Polygons are closed figures with straight sides, while a circle is a curved figure. Therefore, a circle is not considered a polygon.Rate this question:
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- 8.
Mr. Ojo made a profit of 32% on an article he bought for N3,200.00. How much did he sell the article?
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A. N2,024.00
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B. N2,176.00
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C. N3,200.00
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D. N4,224.00
Correct Answer
A. D. N4,224.00Explanation
Mr. Ojo made a profit of 32% on an article he bought for N3,200.00. To find the selling price, we need to add the profit to the cost price. The profit is 32% of N3,200.00, which is (32/100) x N3,200.00 = N1,024.00. Therefore, the selling price is N3,200.00 + N1,024.00 = N4,224.00.Rate this question:
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- 9.
How many faces have a cylinder?
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A. 1
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B. 2
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C. 3
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D. 5
Correct Answer
A. C. 3Explanation
A cylinder has three faces: two circular faces on the top and bottom, and one curved face that wraps around the sides.Rate this question:
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- 10.
The LCM of 5ab2 and 3a2b is:
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A. ab
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B. 3a/2b
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C. 5a3b3
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D. 15a2b2 ​​​​​​​
Correct Answer
A. D. 15a2b2 ​​​​​​​Explanation
The LCM (Least Common Multiple) of two numbers or expressions is the smallest multiple that is divisible by both numbers or expressions. In this case, the LCM of 5ab^2 and 3a^2b is 15a^2b^2 because it is the smallest multiple that is divisible by both 5ab^2 and 3a^2b. The factors of 5ab^2 are 5, a, b, and b, while the factors of 3a^2b are 3, a, a, and b. The LCM should include all the factors with their highest powers, resulting in 15a^2b^2.Rate this question:
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- 11.
Evaluate 2p – (p – 2p)
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A. 0
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B. p
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C. 3p
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D. 2p
Correct Answer
A. C. 3pExplanation
To evaluate the expression 2p - (p - 2p), we can simplify it step by step.
First, we simplify the expression inside the parentheses: (p - 2p) = -p.
Next, we substitute this simplified expression back into the original expression: 2p - (-p) = 2p + p = 3p.
Therefore, the correct answer is C. 3p.Rate this question:
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- 12.
The first three prime numbers are:
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A. 1, 2, 3
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B. 1, 3, 5
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C. 3, 5, 7
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D. 2, 3, 5
Correct Answer
A. D. 2, 3, 5Explanation
The first three prime numbers are 2, 3, and 5. Prime numbers are numbers that are only divisible by 1 and themselves. In this case, 2 is the first prime number because it is only divisible by 1 and 2. 3 is the second prime number because it is only divisible by 1 and 3. 5 is the third prime number because it is only divisible by 1 and 5. Therefore, the correct answer is D. 2, 3, 5.Rate this question:
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- 13.
Find the product of (4m – n) and (3m – 2n)
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A. 12m2 + 11mn – 2n
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B. 12m2 – 11mn + 2n2
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C. 12m2 + 11mn + 2n2
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D. 12m2 – 11mn + 2n2 ​​​​​​​
Correct Answer
A. D. 12m2 – 11mn + 2n2 ​​​​​​​Explanation
The given question asks for the product of two binomials: (4m - n) and (3m - 2n). To find the product, we can use the distributive property. Multiplying the first terms of each binomial gives us 4m * 3m = 12m^2. Multiplying the outer terms gives us 4m * -2n = -8mn. Multiplying the inner terms gives us -n * 3m = -3mn. And finally, multiplying the last terms gives us -n * -2n = 2n^2. Combining all these terms, we get 12m^2 - 8mn - 3mn + 2n^2, which simplifies to 12m^2 - 11mn + 2n^2. Therefore, the correct answer is D. 12m^2 - 11mn + 2n^2.Rate this question:
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- 14.
Find the product of the square root of 16 and the square of 9 is
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A. 3240
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B. 1296
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C. 324
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D. 144
Correct Answer
A. C. 324Explanation
The square root of 16 is 4, and the square of 9 is 81. Therefore, the product of the square root of 16 and the square of 9 is 4 * 81 = 324.Rate this question:
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- 15.
Evaluate below , given that a = 2, b = -2, c = 1
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A. -2
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B. -1
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C. 0
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D. 2
Correct Answer
A. D. 2 -
- 16.
Simplify
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  A. 2x/3
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B. x2/9Â Â Â Â
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C. x2/6Â Â Â Â
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D. x2/3
Correct Answer
A. B. x2/9Â Â Â ÂExplanation
The expression "Simplify" can be interpreted as finding the simplest form of the given expression. In this case, the simplest form would involve reducing the expression as much as possible. Looking at the given options, option B. x^2/9 is the simplest form because it cannot be further reduced. The other options still have terms that can be simplified or reduced. Therefore, option B is the correct answer.Rate this question:
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- 17.
Factorize x2 – 1.
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A. (x-1) (x+1)
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B. (x-1) (x -1)
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C. (x+1) (x+1)
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D. x (x – 1)
Correct Answer
A. A. (x-1) (x+1)Explanation
The given expression is a quadratic equation in the form of x^2 - 1. This can be factorized using the difference of squares formula, which states that a^2 - b^2 = (a + b)(a - b). In this case, a is x and b is 1. Therefore, the expression can be factorized as (x + 1)(x - 1), which matches option A.Rate this question:
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- 18.
The probability of a student passing JSSCE Mathematics is 70/100. What is the probability that the student will fail?
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A. 10/100
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B. 30/100
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C. 50/100
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D. 70/100
Correct Answer
A. B. 30/100Explanation
The probability of an event occurring is equal to 1 minus the probability of the event not occurring. In this case, the probability of a student passing is 70/100, so the probability of a student failing is 1 - 70/100 = 30/100. Therefore, the correct answer is B. 30/100.Rate this question:
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- 19.
If 13 is the mean of the following set of numbers: 12, 11, 14 and x, what is the value of x?
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A. 11
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B. 12
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C. 13
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D. 15
Correct Answer
A. D. 15Explanation
The mean of a set of numbers is the sum of all the numbers divided by the total number of numbers. In this case, the mean is 13. To find the value of x, we need to determine what number, when added to the set, will result in a mean of 13. By adding up the given numbers (12 + 11 + 14 = 37) and subtracting this sum from the total sum needed for a mean of 13 multiplied by the total number of numbers (13 x 4 = 52), we find that x must be 15 (52 - 37 = 15). Therefore, the value of x is 15.Rate this question:
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- 20.
In bisecting any line, the following are required.
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A. A ruler and a pair of dividers
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B. A ruler and protractor
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C. A ruler and a pair of compasses
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D. A ruler and pencil
Correct Answer
A. C. A ruler and a pair of compassesExplanation
To bisect a line, a ruler is needed to measure and draw the line. However, a pair of compasses is required to accurately divide the line into two equal parts. The compasses can be adjusted to the desired length and then used to mark two points equidistant from the endpoints of the line. These points will divide the line into two equal halves. Therefore, option C, which includes both a ruler and a pair of compasses, is the correct answer.Rate this question:
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- 21.
The value of 7—(—15) is
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A. -8
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B. 22
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C. 8
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D. 105
Correct Answer
A. B. 22Explanation
The expression 7 - (-15) can be simplified by applying the rule of subtracting a negative number, which is the same as adding a positive number. So, 7 - (-15) becomes 7 + 15, which equals 22. Therefore, the value of 7 - (-15) is 22.Rate this question:
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- 22.
Round off 3.9695 to 2 decimal places
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A. 3.98
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B. 3.97
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C. 3.96
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D. 3.95
Correct Answer
A. B. 3.97Explanation
To round off 3.9695 to 2 decimal places, we look at the third decimal place, which is 9. Since it is greater than or equal to 5, we round up the second decimal place, which is 6. Therefore, the correct answer is B. 3.97.Rate this question:
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- 23.
Which of the following fractions is the smallest fraction : 3/4 , 5/6 , 1/2 , 12/15
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A. 12/15
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B. 6/15
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C. 5/6
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D. ½
Correct Answer
A. D. ½Explanation
The correct answer is D. 1/2. To determine the smallest fraction, we can compare the numerators and denominators of each fraction. The numerator of 1/2 is the smallest among all the given fractions, while the denominators are all equal to 2. Therefore, 1/2 is the smallest fraction.Rate this question:
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- 24.
Find the highest common factor of 325, 350, and 375
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A. 13
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B. 15
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C. 21
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D. 25
Correct Answer
A. D. 25Explanation
The highest common factor of 325, 350, and 375 is 25. This can be found by finding the prime factors of each number and identifying the common factors. 325 can be factored into 5 x 5 x 13, 350 can be factored into 2 x 5 x 5 x 7, and 375 can be factored into 3 x 5 x 5 x 5. The highest common factor is the product of the common prime factors, which in this case is 5 x 5 = 25.Rate this question:
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- 25.
Express 6561 in index form.
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A. 93
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B. 94
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C. 95 ​​​​​​​​​​​​​​
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D. 96
Correct Answer
A. B. 94Explanation
In index form, a number is expressed as a base raised to a power. In this case, 6561 can be expressed as 9 raised to the power of 4. Therefore, the correct answer is B. 94.Rate this question:
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- 26.
If N9 600 was shared among three boys Ola, Tope and Jide in the ratio 3 : 4 : 5, respectively, what is Jide’s share?
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A. N2, 400
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B. N4, 000
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C. N950
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D. N3, 200
Correct Answer
A. B. N4, 000Explanation
Ola, Tope, and Jide's shares are in the ratio of 3:4:5 respectively. To find Jide's share, we need to calculate what fraction of the total amount N9,600 corresponds to Jide's share.
The total ratio is 3+4+5 = 12. To find Jide's share, we divide his ratio (5) by the total ratio (12) and multiply it by the total amount (N9,600).
Jide's share = (5/12) * N9,600 = N4,000.
Therefore, Jide's share is N4,000.Rate this question:
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- 27.
What is the correct name for one thousand billion?
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A. One hundred
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B. One cillion
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C. One gazillion
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D. One trillion
Correct Answer
A. D. One trillionExplanation
The correct name for one thousand billion is one trillion. In the short scale numerical system, which is commonly used in the United States and most English-speaking countries, one trillion is equal to 1,000,000,000,000. It is formed by adding the prefix "tri-" meaning three, to the base unit "illion" which represents a large, indeterminate number.Rate this question:
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- 28.
30% of N900
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A. N270
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B. N27
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C. N90
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D. 290
Correct Answer
A. A. N270Explanation
30% of N900 is equal to N270. This can be calculated by multiplying 900 by 0.30, which gives us 270. Therefore, the correct answer is A. N270.Rate this question:
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- 29.
A trader buys a gallon of palm oil for N1,500.00 and sells it at a profit of 10%. Calculate the selling price
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A. N1,750.00
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B. N1,650.00
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C. N1,550.00
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D. N1,450.00
Correct Answer
A. B. N1,650.00Explanation
The selling price can be calculated by adding the profit to the cost price. The profit is calculated as 10% of the cost price, which is 0.10 * N1,500.00 = N150.00. Therefore, the selling price is N1,500.00 + N150.00 = N1,650.00.Rate this question:
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- 30.
Solve the equation 2 ½ = 1/y
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A. 1/5
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B. 3/5
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C. 2/5
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D. 4/5
Correct Answer
A. C. 2/5Explanation
The equation can be solved by cross-multiplying. Multiply both sides of the equation by y to get rid of the fraction. This gives us 2 1/2 * y = 1. Simplifying the left side of the equation, we have 5/2 * y = 1. To solve for y, divide both sides of the equation by 5/2. This gives us y = 1 / (5/2) which simplifies to y = 2/5. Therefore, the correct answer is C. 2/5.Rate this question:
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- 31.
What is the value of 962?
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A. 6226
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B. 7226
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C. 9216
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D. 7216
Correct Answer
A. C. 9216Explanation
The value of 962 is 9216.Rate this question:
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- 32.
If a = 2, put ( >, <, , or =) in the box for the inequality below: -23 -45
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A. >
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B. >
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C. <
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D. =
Correct Answer
A. A. >Explanation
Since a = 2, we can substitute 2 into the inequality: -23 > -45. This is true because -23 is greater than -45. Therefore, the correct answer is A. >.Rate this question:
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- 33.
The number of pupils in a school is 875. If 350 are girls, what percentage of the pupils are boys?
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A. 16%
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B. 60%
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C. 25%
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D. 45&
Correct Answer
A. B. 60%Explanation
If there are 875 pupils in total and 350 are girls, then the remaining number of pupils must be boys. To find the percentage of boys, we can subtract the number of girls from the total number of pupils and divide by the total number of pupils. (875 - 350) / 875 = 525 / 875 = 0.6. Multiplying by 100 to convert to a percentage, we get 60%. Therefore, the percentage of pupils who are boys is 60%.Rate this question:
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- 34.
These numbers are square numbers except
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A. 324
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B. 224
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C. 196
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D. 169
Correct Answer
A. B. 224Explanation
The numbers given are all square numbers, except for 224. A square number is a number that can be expressed as the product of an integer multiplied by itself. For example, 324 is a square number because it can be expressed as 18 multiplied by 18 (18^2 = 324). Similarly, 196 is a square number because it can be expressed as 14 multiplied by 14 (14^2 = 196). 169 is a square number because it can be expressed as 13 multiplied by 13 (13^2 = 169). However, 224 is not a square number because there is no integer that can be multiplied by itself to give 224.Rate this question:
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- 35.
Solve 5m/6 = 3 1/3
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A. 60
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B. 40
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C. 10
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D. 4
Correct Answer
A. D. 4Explanation
To solve the equation 5m/6 = 3 1/3, we can convert the mixed fraction 3 1/3 to an improper fraction. 3 1/3 is equal to (3 * 3 + 1)/3 = 10/3. Now, we can rewrite the equation as 5m/6 = 10/3. To solve for m, we can cross multiply. 5m * 3 = 6 * 10. Simplifying this gives us 15m = 60. Dividing both sides by 15, we find that m = 4. Therefore, the correct answer is D. 4.Rate this question:
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- 36.
Increase 12 by 30%
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A. 33.6
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B. 40
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C. 15.6
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D. 156
Correct Answer
A. C. 15.6Explanation
To increase 12 by 30%, we can calculate 30% of 12 by multiplying 12 by 0.3. This gives us 3.6. Adding 3.6 to 12, we get the final result of 15.6. Therefore, the correct answer is C. 15.6.Rate this question:
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- 37.
The point where the x axis crosses the y axis in a graph is called ___
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A. cartesian
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B. intersection
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C. origin
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D. ordered pairs
Correct Answer
A. C. originExplanation
The point where the x axis crosses the y axis in a graph is called the origin.Rate this question:
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- 38.
Factorize 24pz – 8pr.
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A. 8p (3z –r)
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B. 8p (z – 3r)
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C. 8p (3z + r)
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D. (8p (4z – r)
Correct Answer
A. A. 8p (3z –r)Explanation
The given expression can be factorized by finding the greatest common factor (GCF) of the terms. In this case, the GCF of 24pz and 8pr is 8p. To factorize, we divide each term by the GCF and write the result inside the parentheses. So, the factorized form is 8p(3z - r).Rate this question:
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- 39.
Find the area of triangles of height 5cm, and base 7cm.
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A. 17.5cm2
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B. 15.7cm
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C. 18cm2
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D. 35cm2 ​​​​​​​
Correct Answer
A. A. 17.5cm2Explanation
The formula for finding the area of a triangle is 1/2 * base * height. In this case, the base is 7cm and the height is 5cm. Plugging these values into the formula, we get 1/2 * 7cm * 5cm = 17.5cm2. Therefore, the correct answer is A. 17.5cm2.Rate this question:
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- 40.
A pack of cards has ___ unbiased cards.
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A. 50
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B. 52
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C. 54
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D. 58
Correct Answer
A. B. 52Explanation
A standard pack of cards contains 52 cards, consisting of 4 suits (hearts, diamonds, clubs, and spades) and 13 ranks (Ace through King) in each suit. Each card is equally likely to be drawn, making the pack of cards unbiased.Rate this question:
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- 41.
Express as a single number: 3.8 x 104 – 9.7 103
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A. 28300
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B. 28700
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C. 59700
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D . 49700
Correct Answer
A. A. 28300Explanation
The correct answer is A. 28300. To find the solution, we subtract 9.7 times 10 raised to the power of 3 from 3.8 times 10 raised to the power of 4. This can be simplified to 38,000 - 9,700, which equals 28,300.Rate this question:
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- 42.
If 2x0 and 4x0 are supplementary angles. What is the value of x?
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A. 750
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B. 600
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C. 450
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D. 300
Correct Answer
A. D. 300Explanation
If 2x0 and 4x0 are supplementary angles, it means that their sum is equal to 180 degrees. Therefore, we can set up the equation 2x0 + 4x0 = 180 and solve for x. Combining like terms, we get 6x0 = 180. Dividing both sides by 6, we find that x0 = 30. Therefore, the value of x is 30 multiplied by 10, which equals 300.Rate this question:
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- 43.
If 15 men dig a trench for 10 days, how many men will be required to dig the trench in 2 days?
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A. 150 men
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B. 75 men
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C. 60 men
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D. 30 men
Correct Answer
A. B. 75 menExplanation
If 15 men can dig a trench in 10 days, it means that the total work required to dig the trench is equivalent to 15 men working for 10 days. Therefore, the total work done by these 15 men is 15 * 10 = 150 man-days.
To find out how many men will be required to dig the trench in 2 days, we need to divide the total work required (150 man-days) by the number of days (2).
Therefore, the number of men required is 150 man-days / 2 days = 75 men.
Hence, the correct answer is B. 75 men.Rate this question:
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- 44.
Find the mean score of these scores: 2, 3, 0, 8, 7, 5, 9, 6
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A. 3.75
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B. 5.50
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C. 5.00
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D. 4.00
Correct Answer
A. C. 5.00Explanation
The mean score is calculated by adding up all the scores and then dividing the sum by the total number of scores. In this case, the sum of the scores is 2 + 3 + 0 + 8 + 7 + 5 + 9 + 6 = 40. Since there are 8 scores in total, the mean score is 40/8 = 5.00. Therefore, the correct answer is C. 5.00.Rate this question:
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- 45.
Round off 23 456 713 500 145 to 3 significant figures and write your answer in words
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A. Twenty – three trillion and five hundred million
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B. Twenty – three trillion and four hundred million
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C. Twenty – three trillion and five hundred billion
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D. Twenty 0- three trillion and four hundred billion
Correct Answer
A. C. Twenty – three trillion and five hundred billionExplanation
When rounding off to 3 significant figures, we start counting from the leftmost non-zero digit. In this case, the leftmost non-zero digit is 2. The next two digits after 2 are 3 and 4, which are less than 5. Therefore, we do not round up the 2. The remaining digits after the third significant figure are ignored. Therefore, the rounded off number is 23 trillion and 500 billion.Rate this question:
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- 46.
Simplify -4 x -2 x -3 -2 x 6
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A. -1/2
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B. -2
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C. -3
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D. 2
Correct Answer
A. D. 2Explanation
The expression -4 x -2 x -3 simplifies to -24. The expression -2 x 6 simplifies to -12. Therefore, the correct answer is D. 2, as -24 divided by -12 equals 2.Rate this question:
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- 47.
Factorize 81 + 18a + a2
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A. (a+9) (a-9)
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B. (a+9) (a+9)
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C. (a+3) (a+27)
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D. (a+1)(a+81)
Correct Answer
A. B. (a+9) (a+9)Explanation
The given expression is a quadratic trinomial. To factorize it, we can look for two binomials that when multiplied together, give us the original expression. In this case, we can see that the expression can be written as (a+9)(a+9), which is equivalent to (a+9)^2. Therefore, the correct answer is B. (a+9) (a+9).Rate this question:
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- 48.
The difference between the median and the mode of the following set of numbers: 7, 4, 9, 5, 6, 7, 8, 7, 4,6, 5 is ___
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A. -2
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B. -1
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C. 0
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D. 1
Correct Answer
A. D. 1Explanation
The mode of a set of numbers is the value that appears most frequently. In this set, the number 7 appears three times, which makes it the mode. The median is the middle value when the numbers are arranged in ascending order. If we arrange the numbers in ascending order, we get 4, 4, 5, 5, 6, 6, 7, 7, 7, 8, 9. The middle value is 6, so the median is 6. The difference between the median and the mode is 6 - 7 = -1. Therefore, the correct answer is D. 1.Rate this question:
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- 49.
Find the unknown angle in the figure below
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A. 1320
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B. 720
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C. 680
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D. 480
Correct Answer
A. D. 480 -
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