Add positive and negative whole numbers

Answer Key - Grade 7 Math Worksheet - Building Confidence

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

1. 1.

   Ari's robot beeps proudly. It starts at -4 on a number line and rolls 9 right, then 6 left. Where does the robot stop?

   -1
2. 2.

   Bo winds up a toy frog, which looks very determined. It starts at 3 on a number line and hops 8 left, then 2 left. Where does the frog stop?

   -7
3. 3.

   Jun's toy train starts at 5 on a number-line track. It chugs 7 left, then 4 more left. Where does the train stop?

   -6
4. 4.

   Kira's pet snail is in no hurry today. It starts at -2 on a chalk number line, slides 5 left, then 3 right. Where does the snail stop?

   -4
5. 5.

   Milo writes a puzzle on the whiteboard, then caps the marker with a flourish. What is 6 + (-9) + 5?

   2
6. 6.

   Noah's pencil is almost a stub after all this practice. What is (-2) + (-5) + (-4)?

   -11
7. 7.

   Pia opens the math book to a page of number puzzles. What is (-8) + 3 + 9?

   4
8. 8.

   On a whale watch, Ren spots a whale just under the water, at -4 m. What change in meters brings the whale up to the surface, 0 m?

   4
9. 9.

   Ari's kite climbs 8 meters on a gust, then drops 8 meters when the wind takes a nap. What is the total change in the kite's height?

   0
10. 10.

    Bo watches the school thermometer. The temperature fell 9 degrees by dawn, then rose 9 degrees by noon. What was the total change in temperature?

    0