Add and subtract fractions and decimals, including negatives

Answer Key - Grade 7 Math Worksheet

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

1. 1.

   Luz balances a decimal puzzle on the scales. What is 2.4 + (-0.35)?

   2.05
2. 2.

   Noah finds a decimal puzzle in the math book. What is (-3.08) + (-1.9)?

   -4.98
3. 3.

   Pia picks a decimal star card. What is 1.2 - (-0.45)?

   1.65
4. 4.

   Ren writes a decimal subtraction on the board. What is (-2.5) - 0.85?

   -3.35
5. 5.

   Zee draws a decimal subtraction card. What is (-1.6) - (-2.75)?

   1.15
6. 6.

   Ari draws a fraction card from the jar. What is (-1/2) + 1/3?

   -1/6
7. 7.

   Jun picks a fraction star card. What is 1/4 - 2/3?

   -5/12
8. 8.

   Luz rings a bell for a fraction subtraction. What is 5/6 - (-1/4)?

   13/12
9. 9.

   Noah watches an otter at -4.6 m. The otter swims up 2.35 m. What is the otter's position now? (Below the surface is negative.)

   -2.25
10. 10.

    A tide gauge at Pia's dock reads -3/4 ft. The tide rises 5/6 ft. What does the gauge read now? (Below the dock mark is negative.)

    1/12