Add and subtract fractions and decimals, including negatives

Answer Key - Grade 7 Math Worksheet - Building Confidence

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

1. 1.

   Ari's robot starts at -1.5 on a number line. Adding 2.5 is a move of 2.5 right. Where does the robot stop?

   1
2. 2.

   Bo's frog starts at 3.2 on a number line, looking very determined. Adding (-4.7) is a move of 4.7 left. Where does the frog land?

   -1.5
3. 3.

   Esme's toy turtle starts at -5/8 on a number line. Adding 7/8 is a move of 7/8 right. Where does the turtle stop?

   1/4
4. 4.

   Noah picks a star card from the pile. What is 2.5 - (-1.8)?

   4.3
5. 5.

   Pia draws a subtraction card from the jar. What is (-3.2) - 1.7?

   -4.9
6. 6.

   Ren writes a subtraction on the whiteboard. What is (-5.3) - (-1.9)?

   -3.4
7. 7.

   Tala rings a bell for a subtraction question. What is (-4.1) - (-2.6)?

   -1.5
8. 8.

   Zee writes a fraction puzzle on the whiteboard. What is (-3/8) + 5/8?

   1/4
9. 9.

   Esme picks a fraction star card. What is 3/8 - 5/8?

   -1/4
10. 10.

    Kira draws a fraction subtraction card. What is 7/10 - (-3/10)?

    1