1. Multiplication with Non-Unit Fractions
5th Grade, Lesson 3-2
Multiplication with Non-Unit Fractions

2. About this lesson… Here we show a collection of six objects.
The collection is divided into three equal groups.
We see that there are ___ objects in 1/3 of the collection.
We also see that there are ___ objects in 2/3 of the collection.

3. This collection of twelve objects has been divided into four equal groups.
There are ___ objects in ¼ of the collection, so there are ___ objects in ¾ of the collection.

4. Examples
Two thirds of the 12 musicians played guitars. How many of the musicians played guitars? Draw a diagram to illustrate this problem.
Cory has finished ¾ of the 28 problems on the assignment. How many problems did Cory finish? Draw a diagram to illustrate this problem.

5. More Examples
Becky has 21 math problems. She has solved 2/7 of them. How many problems has she solved.
A zoo has 56 bears. 3/8 of them are black. How many are not black?

6. Boss-Secretary
Partner A will be the boss. Partner B will be the secretary. The secretary will write down and solve the problem exactly how the boss tells them to. Once both partners agree that it is solved correctly, you will reverse roles,

9. Assignment:
Homework and Remembering 3-2 