Steady change that starts above zero

Answer Key - Grade 7 Math Worksheet

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

1. Read this first

   Use the table

   weeks	cm
   2	10
   5	19
   8	28

2. 1.

   Esme measures a plant (it leans toward the window). How tall was the plant at the start, at 0 weeks?

   4
3. 2.

   Kira lets out string for a kite (it tugs). How many meters of string were out at the start, at 0 minutes?

   9
4. 3.

   Luz reads an adventure book (the bookmark is tired). How many pages had Luz read at the start, at 0 hours?

   26
5. 4.

   Pia stacks books on a tray (the top one wobbles). How many cm does each book add?

   4
6. 5.

   Tala lets out string for a kite (it tugs). 6 meters of string are out and 4 more meters go out each minute. How many meters of string are out after 6 minutes?

   30
7. 6.

   Zee knits a scarf (the yarn ball rolls away). The scarf is 15 cm long and grows 7 cm each hour. How long is the scarf after 4 hours?

   43

8. Use the table

   hours	cm
   1	10
   2	18
   3	26

9. 7.

   Bo knits a scarf (the yarn ball rolls away). Which rule gives y (x in hours and y in cm)?

   • y = 8x
   • y = 10x
   • y = 2x + 8
   • y = 8x + 2
10. 8.

    Jun plays a quiz game (the buzzer is loud). How many points does Jun earn each round?

    5
11. 9.

    Kira knits a scarf (the yarn ball rolls away). How many cm does the scarf grow each hour?

    7
12. 10.

    Luz lets out string for a kite (it tugs). How many meters of string go out each minute?

    9