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.

   Esme's toy car starts at -6 on a number line. It rolls 2 right, then zooms 9 right. Where does the car stop?

   5
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.

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

   4
6. 6.

   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
7. 7.

   After two tricky questions, Tala's quiz team has -6 points. What score on the next question brings the team back to 0 points?

   6
8. 8.

   Zee's sled sits at the top of a small hill, 8 m above the bottom (0 m). What change in height, as a positive or negative number, takes the sled down to the bottom?

   -8
9. 9.

   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
10. 10.

    Esme's team wins 5 points for a great answer, then loses 5 points for shouting it out of turn. What is the team's total change in points?

    0