Unit 3 Contents

24. Jessie studies 8 new spelling words every week. In 8 weeks, how many new spelling words will she study? Write a number sentence.
25. Roberto's group at camp sold 49 boxes of popcorn. Each boy sold 7 boxes. How many boys are in Roberto's group? Write a number sentence.

Multiplying with 0 and 1

1. On Monday, Jan, Ann, Stan, Fran, and Tran each had 1 candy bar in their lunch bags. How many candy bars did they have in all on Monday? Write a number sentence to match your solution.
2. On Tuesday, Jan, Ann, Stan, Fran, Tran, Tito, Terrell, and Tyrone each had 1 candy bar in their lunch bags. How many candy bars did they have in all on Tuesday? Write a number sentence.
3. On Wednesday, all 26 students in the fourth-grade class each had 1 candy bar in their lunch bags. How many candy bars did the fourth-graders have in all on Wednesday? Write a number sentence.
1. On Thursday, Billy, Willie, Millie, Tillie, and Lilly each had 0 candy bars in their lunch bags. How many candy bars did they have in all on Thursday? Write a number sentence.
2. On Friday, Billy, Willie, Millie, Tillie, Lilly, Val, Sal, Cal, and Al each had 0 candy bars in their lunch bags. How many candy bars did they have in all on Friday? Write a number sentence.
3. On Friday, a group of 18 fifth-grade students each had 0 candy bars in their lunch bags. They said to Billy and his friends, “We have more candy bars than you because there are 18 of us. 18  0 is more than 9 0.” What should Billy and his friends tell the fifth-grade students?
28. Try the following problems. You may want to use your calculator to check.
1. 5 0 =
2. 5 1 =
3. 10 0 =
4. 10 1 =
5. 0 98 =
6. 98 1 =
7. 0 5348 =
8. 1 5348 =
1. What can you say about multiplying numbers by 0? Explain.
2. What can you say about multiplying numbers by 1? Explain.