Multiply and divide positive and negative whole numbers

Answer Key - Grade 7 Math Worksheet

Circle the best answer, or write your answer on the line.

1. 1.

   Pia rings a bell for a bonus question. What is 12 × (-7)?

   -84
2. 2.

   Ren picks a star card from the pile. What is 9 × (-6)?

   -54
3. 3.

   Bo writes the next division on the board. What is 65 ÷ (-5)?

   -13
4. 4.

   The air at Kira's campsite cools 3°F each hour, a rate of -3°F per hour. Four hours ago is hour -4. What was the temperature 4 hours ago, compared with now? (Warmer is positive.)

   12
5. 5.

   Luz's balloon rises 4 m each minute, a rate of 4 m per minute. Six minutes ago is minute -6. Where was the balloon 6 minutes ago, compared with now? (Up is positive.)

   -24
6. 6.

   Milo's sled climbs a hill at 5 m per minute. Seven minutes ago is minute -7. Where was the sled 7 minutes ago, compared with now? (Up is positive.)

   -35
7. 7.

   Noah watches a whale sink 2 m each minute, a rate of -2 m per minute. Five minutes ago is minute -5. Where was the whale 5 minutes ago, compared with now? (Up is positive.)

   10
8. 8.

   Pia's soup cools 3°F each hour, a rate of -3°F per hour. It has cooled by 18°F, a change of -18°F. How many hours has it been cooling?

   6
9. 9.

   Tala's balloon sinks 5 m each minute, a rate of -5 m per minute. Earlier it was 40 m higher than now. How many minutes from now was that? (Past times are negative.)

   -8
10. 10.

    Jun writes the product 6 × (-3). Which story matches it?

    • A kite rises 3 m each second for 6 seconds.
    • A kite drops 3 m each second for 6 seconds.
    • A kite drops 3 m once, then 6 seconds pass.
    • A kite at 6 m drops 3 more meters.