1. Lesson 6.1: Multiplication and Division Number Stories

2. Solve the fact pairs mentally.
Mental Math
Solve the fact pairs mentally.
2 * 5 = ____ 10/5 = ____
3 * 6 = ____ 18/6 = ____
5 * 4 = ____ 20/4 = ____
7 * 4 = ____ 28/4 = ____
5 * 9 = ____ 45/9 = ____
7 * 8 = ____ 56/7 = ____
8 * 9 = ____ 72/8 = ____

3. Solve on your whiteboard. Show your work.
Math Message
Solve on your whiteboard. Show your work.
There are 6 rows of chairs. There are 4 chairs in each row. How many chairs are there in all?

4. Math Message Discussion
How did you solve the problem?
Some possible methods:

5. Multiplication/Division Diagram
Another way…

6. Using the Diagram
Sammy and Chris are setting up chairs for the 4th Grade Talent Show. There are 32 chairs. Mrs. Morales asked them to arrange the chairs so that there are 4 rows with the same number of chairs in each row. How many chairs should Sammy and Chris place in each row?

7. Let’s try another one!
Mr. Frank is setting up chairs for the Board of Education meeting in the cafeteria. There are 43 chairs. Mr. Marold asked Mr. Frank to place 7 chairs in each row. How many rows of chairs will there be?

8. Time to work alone… MJ pp. 138 and 139. Problems 1-4.

9. Solving Extended Facts
Math Journal page 140.

10. Homework

11. Math Boxes

12. Math Box Answers