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.

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

   -3.35
3. 3.

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

   1.15
4. 4.

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

   -1/6
5. 5.

   Bo balances a fraction puzzle on the scales. What is 3/4 + (-5/6)?

   -1/12
6. 6.

   Kira writes a fraction subtraction on the board. What is (-3/4) - (-1/6)?

   -7/12
7. 7.

   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
8. 8.

   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
9. 9.

   The water in Ren's bucket is 0.75 in above the fill line. After a hot hour it drops 1.4 in. Where is the water now? (Below the line is negative.)

   -0.65
10. 10.

    Zee's frog sits at -1.75 on a number line, and a lily pad is at 0.5. How far is the frog from the lily pad?

    2.25