Add positive and negative whole numbers

Answer Key - Grade 7 Math Worksheet

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

1. 1.

   Jun solves the warm-up puzzle on the board before the bell. What is (-14) + 9 + (-8)?

   -13
2. 2.

   Kira's planner has one puzzle left, next to a doodle of a cat. What is 17 + (-23) + 4?

   -2
3. 3.

   Luz writes a puzzle for a friend in very neat pencil. What is (-12) + (-11) + 25?

   2
4. 4.

   Noah finds a puzzle book at the library and tries the first page. What is (-16) + (-9) + (-13)?

   -38
5. 5.

   Tala's video game score goes up 8 points, down 13 points on a trap, then up 6 points. The game music gets very dramatic. What is the total change in points?

   1
6. 6.

   Zee's kite flies 9 m above the ground, wiggling its tail. A gust drops it 2 m, then 4 m more. How high is the kite now?

   3
7. 7.

   On a nature show, Ari watches a whale at -20 m. (Below the surface is negative.) It dives 14 m deeper, then rises 25 m. Where is the whale now?

   -9
8. 8.

   Overnight, the temperature at Jun's school fell 9 degrees. By 10 a.m. it rose 4 degrees, and by noon it rose 5 more. What was the total change in temperature?

   0
9. 9.

   Luz reads four weather reports for one day. Which report has changes that add to 0?

   • It rises 7 degrees, falls 7, then rises 3.
   • It falls 7 degrees, then falls 7 more.
   • It rises 7 degrees, then falls 3 degrees.
   • It rises 7 degrees, then falls 7 degrees.
10. 10.

    Noah plans four bike rides on one straight street. East is positive. Which ride has changes that add to 0?

    • Ride 9 east, 9 west, then 4 east.
    • Ride 9 blocks west, then 9 more west.
    • Ride 9 blocks east, then 4 blocks west.
    • Ride 9 blocks east, then 9 blocks west.