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.

   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
3. 3.

   Jun's toy boat floats at -3/4 on a number line river. Adding 1/4 is a move of 1/4 right. Where does the boat stop?

   -1/2
4. 4.

   Kira draws a puzzle card from the math club jar. What is (-2.4) + 1.5?

   -0.9
5. 5.

   Milo finds a puzzle at the back of the math book. What is 0.7 + (-4.2)?

   -3.5
6. 6.

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

   4.3
7. 7.

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

   -3.4
8. 8.

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

   1/4
9. 9.

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

   -2/3
10. 10.

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

    1