1.
-12 + -11
Correct Answer
B. -23
Explanation
The given expression is the sum of -12 and -11. When adding two negative numbers, the result will always be negative. The sum of -12 and -11 is -23.
2.
-6 x -2 =
Correct Answer
A. 12
Explanation
When multiplying two negative numbers, the result is always positive. So, when we multiply -6 by -2, the answer is 12.
3.
-3 - (-4)
Correct Answer
A. 1
Explanation
When subtracting a negative number from another negative number, we can rewrite the expression as the sum of the two numbers. In this case, -3 - (-4) can be rewritten as -3 + 4. Adding these two numbers together gives us 1, which is the correct answer.
4.
-24/6 = (/ means division)
Correct Answer
B. -4
Explanation
When dividing -24 by 6, the result is -4. This is because when dividing two numbers with different signs, the result will have the sign of the number with the higher absolute value. In this case, -24 has a higher absolute value than 6, so the result is negative.
5.
-2 x 4 x -6 (x means multiply)
Correct Answer
C. 48
Explanation
The given expression involves multiplying three numbers: -2, 4, and -6. When multiplying two negative numbers, the result is always positive. Therefore, -2 x -6 equals 12. Multiplying 12 by 4 gives us 48, which is the correct answer.
6.
-6 + 12 - 3
Correct Answer
A. 3
Explanation
The given expression is -6 + 12 - 3. To solve this expression, we start from left to right. First, we add -6 and 12, which gives us 6. Then, we subtract 3 from 6, resulting in 3. Therefore, the correct answer is 3.
7.
-2 x -16 x -4 (x means multiply)
Correct Answer
B. -128
Explanation
When multiplying three negative numbers (-2, -16, -4), the result will be negative. The product of -2 and -16 is 32, and then multiplying that by -4 gives us -128. Therefore, the correct answer is -128.
8.
(12/-4) + (-64/8) = (/ means to divide)
Correct Answer
B. -11
Explanation
The given expression involves adding two fractions. To add fractions, we need to have a common denominator. In this case, the common denominator is 8. So, we convert the first fraction (12/-4) to an equivalent fraction with a denominator of 8 by multiplying the numerator and denominator by 2. This gives us -24/8. Then, we add the two fractions: (-24/8) + (-64/8) = -88/8. Simplifying this fraction, we get -11. Therefore, the correct answer is -11.
9.
(-63/-7) + (-15/15)
Correct Answer
B. 8
Explanation
The given expression involves the addition of two fractions: (-63/-7) and (-15/15). When we simplify each fraction separately, we find that (-63/-7) equals to 9 and (-15/15) equals to -1. Adding these two fractions together, we get 9 + (-1) = 8. Therefore, the correct answer is 8.
10.
42/-6 + -150/3
Correct Answer
A. -57
Explanation
The given expression involves adding two fractions, 42/-6 and -150/3. To add fractions, we need to have a common denominator. In this case, the common denominator is 6. After finding the common denominator, we can add the numerators. The numerator of the first fraction is -42, and the numerator of the second fraction is -150. Adding these gives us -192. Therefore, the sum of the two fractions is -192/6, which simplifies to -32. Therefore, the answer is -32.