Multi-step problems with positive and negative numbers, and checking they make sense

Answer Key - Grade 7 Math Worksheet

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

1. 1.

   Esme's kite flies 15.5 m high. It falls 3/4 m each minute for 8 minutes. How high is the kite then?

   9.5
2. 2.

   Kira's robot starts at 2.25 on a number line. It moves 1/2 to the left in each step, for 7 steps. Where does the robot stop?

   -1.25
3. 3.

   A table of four rows. Row | Change: 1 | -1/2; 2 | -2.25; 3 | 3; 4 | 1.25. Pia keeps a table of how a game score changed in four rounds, in points. What is the total change?

   1.5
4. 4.

   Tala has a 2.75 m piece of yarn and cuts 3 pieces that are 3/4 m each. How many meters of yarn are left?

   0.5
5. 5.

   Zee has 5.25 m of kite string and cuts 4 tails that are 5/8 m each. How many meters of string are left?

   2.75
6. 6.

   Ari has 3.25 liters of juice and fills 3 cups of 1/4 liter each. How many liters of juice are left?

   2.5
7. 7.

   Bo has 8.5 kg of flour and uses 7/8 kg for each of 6 batches. How many kilograms of flour are left?

   3.25
8. 8.

   Luz divides (-48.3) ÷ 6.9 and the screen flickers. Use a quick estimate. Which answer makes sense?

   • -7
   • -70
   • -0.7
   • 7
9. 9.

   Noah multiplies (-0.48) × 0.52, but the pen runs out before the answer. Use a quick estimate. Which answer makes sense?

   • 0.2496
   • -2.496
   • -0.02496
   • -0.2496
10. 10.

    Pia multiplies (-1.2) × (-4.1) in the margin of a book. Use a quick estimate. Which answer makes sense?

    • -4.92
    • 0.492
    • 49.2
    • 4.92