Add and subtract fractions and decimals, including negatives

Answer Key - Grade 7 Math Worksheet - Challenge Me

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

1. 1.

   Kira picks a four-number star card. What is 1.8 + (-0.7) + 2.2 + (-1.3)?

   2
2. 2.

   Milo rings a bell for a four-number question. What is (-0.6) + 1.9 + (-1.4) + 0.8?

   0.7
3. 3.

   Noah fills in a balance puzzle: (-2.6) + ? = 1.4. What is the missing number?

   4
4. 4.

   Pia fills in a puzzle card: 3.75 + ? = (-1.25). What is the missing number?

   -5
5. 5.

   Tala rings a bell for a blank: 2/3 + ? = (-1/6). What is the missing number?

   -5/6
6. 6.

   Ari adds numbers with three decimal places. What is (-0.482) + (-1.37)?

   -1.852
7. 7.

   At dawn Jun's thermometer read -3.5°C. It rose 6.2°C by noon, then fell 4.75°C by night. What was the temperature at night?

   -2.05
8. 8.

   Kira watches a whale at -2.8 m. It dives 1.35 m deeper, then swims up 3.2 m. Where is the whale now? (Below the surface is negative.)

   -0.95
9. 9.

   Luz's tide gauge reads -1/2 ft at dawn. The tide rises 3/4 ft, then falls 5/6 ft. What does the gauge read now? (Below the dock mark is negative.)

   -7/12
10. 10.

    Milo's bucket water is 2/3 in above the fill line. It drops 3/4 in, then drops 1/2 in more. Where is the water now? (Below the line is negative.)

    -7/12