Unit 3 Contents

12. Maya baked chocolate chip cookies. She counted out 45 cookies and put an equal number in each of 9 bags. Then she gave one bag of cookies to each of 9 friends.
1. How many cookies did she give each friend? Write a number sentence for this story.
2. Write a multiplication number sentence in the same fact family. What do the numbers in the multiplication sentence represent?
13. Which of the following problems are in the same fact family as 5 8 = 40?

8 4 = 32

8 5 = 40

Solve Questions 14–25. Use fact families, manipulatives, or other strategies. Write a number sentence for each problem. Then write the other sentences in the same fact family.

14. How many dimes are in 80 cents?
15. How many nickels are in 35 cents?
16. How many nickels are in 15 cents?
17. How many nickels are in 25 cents?
18. How many dimes are in 60 cents?
19. How many dimes are in $1.00?
20. How many dimes are in 40 cents?
21. Maya gets paid for helping a neighbor with her baby one afternoon each week. She saves all the money she gets and after six weeks, she has $36. How much money does Maya get paid each week? Write a number sentence.
22. How many weeks will Maya have to help her neighbor to make $60? Write a number sentence.
23. John lives 4 blocks from school. It takes him 16 minutes to walk to school. How long does it take John to walk one block? Write a number sentence.