10. Note that you are multiplying two negative numbers, which will result in a positive. Next, you will multiply 2 positive numbers, which will result in a positive answer:
-9 * -2 = 18
18 * 3 = 54
B. 54 is your answer.
11. Do the opposite of what it's asking you to do. You are asked "what number" multiplied by 5 will result in -20. Therefore, divide 5 from -20:
-20/5 = -4
D. -4 is your answer.
12. BJ and 3 friends (4 people in total) had to pay a total of 524. Divide 524 with 4:
524/4 = 131.
D. Php 131 is your answer. Each person will pay Php 131 to BJ.
13. Yza made a tower 82 cm high, while Aia made a tower 47 cm high.
Let Yza = y = 82 and Aia = a = 47. Set the equation:
Difference of height = y - a
Plug in the corresponding number to the corresponding variables:
Difference of height = 82 - 47
Difference of height = 35
B. 35 cm is your answer.
14. The boy walks 6 blocks north, and then 4 blocks back. For this type you will usually use a number line, though I do not have one. The starting position is 0:
0 + 6 = 6
6 - 4 = 2
B. 2 blocks north, or the boy will be 2 blocks north of his starting position.
15. Multiply the amount of words per minute with the amount of minutes. The person types 50 words per minute, and must type for 10 minutes:
50 words per minute x 10 minutes = 500 words in 10 minutes.
D. 500 words is your answer.
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