Multi-step problems with positive and negative numbers, and checking they make sense

Answer Key - Grade 7 Math Worksheet

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

1. 1.

   Esme's kite flies 15.5 m high. It falls 3/4 m each minute for 8 minutes. How high is the kite then?

   9.5
2. 2.

   A whale Jun watches from a boat starts at -12.25 m (below the surface is negative). It rises 1/2 m each second for 9 seconds. Where is the whale then?

   -7.75
3. 3.

   Kira's robot starts at 2.25 on a number line. It moves 1/2 to the left in each step, for 7 steps. Where does the robot stop?

   -1.25
4. 4.

   Luz hikes from 1.5 m above the trailhead. The trail descends 3/4 m each minute for 5 minutes. What is Luz's height above the trailhead then?

   -2.25
5. 5.

   A table of four rows. Row | Change: 1 | 2.5; 2 | -3/4; 3 | -1.25; 4 | 1/4. Noah keeps a table of how the temperature changed on four days, in degrees. What is the total change?

   0.75
6. 6.

   A table of four rows. Row | Change: 1 | 1.75; 2 | -2; 3 | -3/4; 4 | -1.5. Ren keeps a table of how a harbor's water level changed on four mornings, in cm. What is the total change?

   -2.5
7. 7.

   Zee has 5.25 m of kite string and cuts 4 tails that are 5/8 m each. How many meters of string are left?

   2.75
8. 8.

   Bo has 8.5 kg of flour and uses 7/8 kg for each of 6 batches. How many kilograms of flour are left?

   3.25
9. 9.

   Esme records four daily temperature changes: -2.5, 0.5, -1.25 and 0.25 degrees. What is the mean daily change?

   -0.75
10. 10.

    A pond's water level changed by -4.5, 0.5, -0.75 and -1.25 cm on four days. Kira wants the mean daily change. What is it?

    -1.5