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 minute adds 2. Esme fills a bucket from a circle (it drips). The table shows one row and the change. How many liters were in the bucket at the start, at 0 minutes?

   3
2. 2.

   Each 1 more hour adds 6. Jun knits a scarf (the yarn ball rolls away). The table shows one row and the change. How long was the scarf at the start, at 0 hours?

   20

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.

   Milo bikes away from home (a squirrel keeps up). How many miles farther away does Milo get each hour?

   12
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.

   Tala stacks books on a tray (the top one wobbles). Rule: y = 2x + 9, with x books and y in cm. What is y when x is 7?

   23
10. 9.

    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
11. 10.

    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