Two-step equation word problems

Answer Key - Grade 7 Math Worksheet - Building Confidence

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

1. 1.

   Ari's plant is 10 cm tall and grows 2 cm each week. Ari draws the bars. After how many weeks is the plant 22 cm tall?

   6
2. 2.

   Tala has 4 crayons and gets 2 more each week from art club. Tala draws the bars. After how many weeks does Tala have 18 crayons?

   7
3. 3.

   Jun buys 2 identical books and uses a $4 coupon. Jun pays $14 and draws the bars. How many dollars does one book cost?

   $9
4. 4.

   Pia counts riders on a bus that starts with 5 riders. At each stop, 3 more get on. After s stops the bus has 20 riders. What equation fits, with s the number of stops?

   3s + 5 = 20
5. 5.

   Bo puts the same number of books on each of 4 shelves, then lends 3 books to a friend. 21 books are left. What equation fits, with f the number of books on each shelf?

   4f − 3 = 21
6. 6.

   Zee practices piano for 10 minutes to warm up, then 5 minutes for each song. In all, Zee practices 40 minutes. What equation fits, with s the number of songs?

   5s + 10 = 40
7. 7.

   Ren has 4 boxes with the same number of crayons. After 4 crayons break, 28 crayons are left. How many crayons were in each box at first?

   8
8. 8.

   Esme reads a thermometer at 4°F. The temperature changes by the same amount each hour. After 2 hours it reads -6°F. By how many degrees does it change each hour?

   -5
9. 9.

   Luz hangs 6 paper stars on a wall, then 3 more each day. After d days there are 24 stars. Which number of days makes the story true?

   • 2
   • 18
   • 6
   • 10
10. 10.

    Tala puts the same number of bookmarks on each of 6 shelves, then gives away 12. 30 bookmarks are left. Which number on each shelf makes the story true?

    • 7
    • 3
    • 17
    • 42