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.

   Jun finds a four-fraction puzzle in the math book. What is 7/8 + (-1/2) + (-7/8) + 3/4?

   1/4
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.

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

   4
6. 6.

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

   2.712
7. 7.

   Esme picks a thousandths star card. What is (-6.2) + 3.125?

   -3.075
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