Operatii Cu Numere Intregi-1
ADUNAREA SI SCADEREA NUMERELOR INTREGI
- 1.
Calculati:-2-7=
- A.
9
- B.
-9
- C.
5
- D.
-5
Correct Answer
B. -9Explanation
The correct answer is -9 because when we subtract 7 from -2, we get -9.Rate this question:
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- 2.
Calculati:-2+7
- A.
5
- B.
-5
- C.
9
- D.
-9
Correct Answer
A. 5Explanation
The correct answer is 5 because when we add -2 and 7, we get 5.Rate this question:
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- 3.
-7-7=
- A.
O
- B.
14
- C.
2
- D.
-14
Correct Answer
D. -14Explanation
The given equation is -7 - 7. When subtracting two negative numbers, the result is negative. Therefore, -7 - 7 equals -14.Rate this question:
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- 4.
-8+8=
- A.
0
- B.
16
- C.
-16
- D.
-2
Correct Answer
A. 0Explanation
The given equation is a simple addition problem with -8 and 8 as the two numbers being added. When we add -8 and 8, the negative and positive values cancel each other out, resulting in a sum of 0. Therefore, the correct answer is 0.Rate this question:
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- 5.
-5-2+11=
- A.
-4
- B.
4
- C.
18
- D.
-18
Correct Answer
B. 4Explanation
The given equation is solved by following the order of operations (PEMDAS/BODMAS). First, we subtract 2 from -5 which gives us -7. Then, we add 11 to -7 which gives us 4. Therefore, the correct answer is 4.Rate this question:
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- 6.
9-2-6-7
- A.
1
- B.
7
- C.
-7
- D.
-6
Correct Answer
D. -6Explanation
The given sequence is 9-2-6-7. To find the next number in the sequence, we can observe that the first number is subtracted by 7, the second number is subtracted by 4, and the third number is subtracted by 1. Following this pattern, the fourth number should be subtracted by -2, resulting in -6. Therefore, the answer is -6.Rate this question:
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- 7.
5-(-6)=
- A.
11
- B.
-1
- C.
1
- D.
-11
Correct Answer
A. 11Explanation
The given equation is 5-(-6). When subtracting a negative number, it is equivalent to adding the positive of that number. So, -(-6) becomes +6. Therefore, 5+6 equals 11.Rate this question:
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- 8.
-5+(-20)=
- A.
-25
- B.
25
- C.
15
- D.
-15
Correct Answer
A. -25Explanation
The given expression involves adding a negative number (-5) and another negative number (-20). When we add two negative numbers, the result is always a negative number. Therefore, the correct answer is -25.Rate this question:
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- 9.
-4-(-2+5)+(7-8)
- A.
-8
- B.
8
- C.
-5
- D.
-3
Correct Answer
A. -8Explanation
The given expression involves addition, subtraction, and multiplication of numbers. To solve it, we can start by simplifying the parentheses first. Inside the parentheses, -2+5 equals 3 and 7-8 equals -1. So the expression becomes -4-3+(-1). Next, we can perform the subtraction from left to right. -4-3 equals -7 and -7+(-1) equals -8. Therefore, the correct answer is -8.Rate this question:
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- 10.
-3-(8-10)+11=
- A.
-10
- B.
10
- C.
-9
- D.
8
Correct Answer
B. 10Explanation
The expression is simplified by first evaluating the parentheses, which results in (8-10) being equal to -2. Then, the expression is simplified further by performing the subtraction and addition operations from left to right. Therefore, -3 - (-2) + 11 is equal to -3 + 2 + 11, which simplifies to 10.Rate this question:
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Jul 22, 2024Quiz Edited by
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Sep 20, 2014Quiz Created by
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