Lesson 6.1:
Multiplication and
Division Number
Stories
Mental Math
Solve the fact pairs mentally.
2 * 5 = ____
3 * 6 = ____
5 * 4 = ____
10/5 = ____
18/6 = ____
20/4 = ____
7 * 4 = ____
5 * 9 = ____
28/4 = ____
45/9 = ____
7 * 8 = ____
8 * 9 = ____
56/7 = ____
72/8 = ____
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?
Math Message Discussion
How did you solve the problem?
Some possible methods:
Multiplication/Division Diagram
Another way…
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?
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?
Time to work alone… MJ pp. 138 and
139. Problems 1-4.
Solving Extended Facts
Math Journal page 140.
Homework
Math Boxes
Math Box Answers