Math 090 Decimals Quiz
This Math 090 Decimals Quiz tests understanding of basic decimal operations, including multiplication, division, subtraction, conversion from fractions to decimals, and decimal alignment in calculations.
- 1.
What is 2.5 X .88?
- A.
2.2
- B.
2.67
- C.
None of these
Correct Answer
A. 2.2Explanation
The correct answer is 2.2 because when you multiply 2.5 by 0.88, you get 2.2.Rate this question:
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- 2.
What is 5.25 divided by .05?
- A.
10.5
- B.
105
- C.
None of these
Correct Answer
B. 105Explanation
When dividing 5.25 by 0.05, we can think of it as moving the decimal point two places to the right in both numbers. This gives us 525 divided by 5, which equals 105. Therefore, the correct answer is 105.Rate this question:
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- 3.
Convert 5/8 into a decimal.
- A.
.685
- B.
5.8
- C.
None of these
Correct Answer
C. None of these -
- 4.
What is 13 - 6.87?
- A.
0.613
- B.
613
- C.
None of these
Correct Answer
C. None of these -
- 5.
Convert 5 3/5 into a decimal.
- A.
0.6
- B.
5.6
- C.
None of these
Correct Answer
B. 5.6Explanation
To convert a mixed number into a decimal, we first multiply the whole number by the denominator of the fraction and then add the numerator. In this case, we multiply 5 by 5 (denominator of 3/5) and get 25. Then we add the numerator 3 to get 28. Finally, we divide 28 by the denominator 5 to get the decimal form, which is 5.6.Rate this question:
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- 6.
To add or subtract decimals, you must line up the decimal points.
- A.
True
- B.
False
- C.
Depends
Correct Answer
A. TrueExplanation
When adding or subtracting decimals, it is necessary to line up the decimal points in order to correctly calculate the result. This is because the decimal point represents the position of the fractional part of the number. By aligning the decimal points, we ensure that the corresponding digits in each decimal place are being added or subtracted accurately.Rate this question:
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- 7.
Multiply (1.3)(2.4)(6.8)
- A.
21.216
- B.
212.16
- C.
None of these
Correct Answer
A. 21.216Explanation
The given question asks to multiply three numbers: 1.3, 2.4, and 6.8. Multiplying these numbers together gives the result of 21.216.Rate this question:
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- 8.
100 - .999
- A.
1
- B.
99
- C.
None of these
Correct Answer
C. None of theseExplanation
The expression 100 - .999 evaluates to 99.001, which is not one of the given answer choices. Therefore, the correct answer is "none of these".Rate this question:
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- 9.
Round 34.657 to the nearest tenths place.
- A.
34.7
- B.
34.66
- C.
None of these
Correct Answer
A. 34.7Explanation
When rounding a number to the nearest tenth place, we look at the digit in the hundredth place. If it is 5 or greater, we round up. If it is less than 5, we round down. In this case, the digit in the hundredth place is 6, which is greater than 5. Therefore, we round up the digit in the tenths place, which is 4, to the next higher number, which is 7. So the correct answer is 34.7.Rate this question:
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Mar 21, 2023Quiz Edited by
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Feb 23, 2009Quiz Created by
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