13. What is the product of
(-10) and (+5)?
a. -50
b. +50
C.-20
d. +30
14. What is the answer of
(-60) + (-5)?
a.-12
b. +12
C-10
d. +9
15. One moming in Canada, the temperature was -8°C. Later at noon, the temperature increased by
18° C. What was the temperature at noon?
a. 10° C b. 12°C
c. 15°C d. 14°C
16. What is the product of (-214) and (+12)?
a. +1514 b.-2414 C. -2568 d. +2615
17. The room temperature of a desert is 40° C and drops to as much as 44 degrees at night. How cold
is this desert at night?
a 4°C b. 2° C
c. -4° C d. -6° C
18. In the morning, the temperature was at 25° C. At noon, it increased by 7° C then dropped by 10°C
at night. What was then the temperature at night?
a. 18° C b. 20° C c. 22° C d. 28° C
19. From the ground floor, the elevator went to the 45 floor. It goes down 23 floors then up to 12 floors.
What floor is the elevator at now?
a. 23 floor b. 34" floor c. 36 floor d. 32 floor
20. From the marker, you took 12 steps forward, 8 steps backward, 3 steps forward then finally 6 steps
backward. How many steps away are you from the maker?
a. 1 step back b. 1 step forward c. 2 steps back d. 2 steps forward
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Verified answer
Answer:
13. a
14. b
15. a
16. c
17. c
18. c
19. b
20. b
Step-by-step explanation:
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