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.

   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.

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

   5/4
6. 6.

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

   -1.852
7. 7.

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

   2.712
8. 8.

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

   -3.075
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