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.

   Esme spots a shortcut in a four-number puzzle. What is (-3.8) + 5.6 + 3.8 + (-1.7)?

   3.9
2. 2.

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

   2
3. 3.

   Luz balances four fractions on the scales. What is 3/4 + (-1/3) + 1/4 + (-1/6)?

   1/2
4. 4.

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

   0.7
5. 5.

   Ren fills in a star puzzle: (-3/4) + ? = 1/2. What is the missing number?

   5/4
6. 6.

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

   -5/6
7. 7.

   Bo balances a thousandths puzzle on the scales. What is 5.06 + (-2.348)?

   2.712
8. 8.

   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
9. 9.

   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
10. 10.

    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