Steady change that starts above zero

Answer Key - Grade 7 Math Worksheet - Building Confidence

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

1. 1.

   Each 1 more week adds 3. Ari measures a plant (it leans toward the window). The table shows one row and the change. How tall was the plant at the start, at 0 weeks?

   6
2. 2.

   Each 1 more book adds 4. Bo stacks books on a tray (the top one wobbles). The table shows one row and the change. How tall is the tray alone, with 0 books?

   5

3. Read this first

   Use the table

   days	stickers
   2	14
   3	19
   4	24

4. 3.

   Kira collects star stickers (one sparkles). How many stickers does Kira collect each day?

   5
5. 4.

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

   10
6. 5.

   Noah measures a plant (it leans toward the window). Rule: y = 4x + 7, with x in weeks and y in cm. What is y when x is 5?

   27
7. 6.

   Pia fills a bucket from a circle (it drips). Rule: y = 3x + 2, with x in minutes and y in liters. What is y when x is 3?

   11
8. 7.

   Snow falls on Ren's street (the snowman shivers). Rule: y = 2x + 5, with x in hours and y in inches. What is y when x is 6?

   17
9. 8.

   Zee reads an adventure book (the bookmark is tired). Zee has read 24 pages and reads 30 pages each hour. How many pages has Zee read after 3 hours?

   114
10. 9.

    Ari bikes away from home (a squirrel keeps up). Ari is 3 miles from home and bikes 10 miles farther away each hour. How many miles from home is Ari after 4 hours?

    43
11. 10.

    Bo collects star stickers (one sparkles). Bo has 12 stickers and collects 4 more each day. How many stickers does Bo have after 5 days?

    32