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.

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

   -3.35
2. 2.

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

   -11/12
3. 3.

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

   -7/12
4. 4.

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

   13/12
5. 5.

   At dawn Milo's thermometer read -3.4°C (a two-scarf morning). By noon it rose 1.9°C. What was the temperature at noon?

   -1.5
6. 6.

   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
7. 7.

   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
8. 8.

   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
9. 9.

   Tala's robot sits at -3.4 on a number line, and its charging spot is at 2.7. How far is the robot from the charging spot?

   6.1
10. 10.

    Bo's toy turtle is at -4.2 on a number line, and a rock is at -1.85. How far is the turtle from the rock?

    2.35