1. Warm Up Problem
Multiply: x 2 4 5

2. Divide Fractions
Lesson 4-7

3. Objectives I can divide two fractions.
I can verify my answer using multiplication.

4. Example 1
Find 1 2 ÷ Write in simplest form. Flip flop the DIVISOR ONLY. The reciprocal of 1 3 is 3. Multiply. 1 2 x 3 = 1 2 x 3 1 = 3 2 Simplify. 3 2 = 1 1 2
Check: x = → 1 2

5. Got It?
1 4 ÷ 3 8
2 3 ÷ 3 8
5 6 ÷ 1 3

6. Example 2 Write a story context for 2 3 ÷ 1 6 .
Mariska has pounds of sunflower seeds. Each day she feeds the cardinals in her yard pound of seeds. For how many days will she be able to feed the cardinals?

7. Got It? 4) Write a story context for 3 4 ÷ 1 8 . Outline:
(Name) has (first fraction) of ___________. Each day she/he give out (second fraction) of _________. For how many days will she/he (fill in based on your scenario)?

8. Example 3
Find 5 7 ÷ ÷ 10 1 = 5 7 x 1 10 = 1 7 x 1 2 = 1 14 Check: 1 14 x 10 = → 5 7

9. Got It?
5) 8 9 ÷ 4 6) 4 5 ÷8 7) ÷4

10. Example 4
Ramon is making party favors. He is dividing pound of almonds into 12 packages. Write and solve an equation to find how many pounds of almonds are in each package.
3 4 ÷12 =
3 4 x =
1 4 x =
1 16
Check: x 12 = → 3 4

11. Got It?
A neighborhood garden that is of an acre is to be divided into 4 equal-size sections. Write and solve an equation to find the size of each section.

12. ½ is being multiplied by 1/5.
Homework Hints:
#11. They are asking you to write in English words the equation in the Venn Diagram. Example: 1 2 ÷5 1 2 × 1 5
½ is being multiplied by 1/5.
It equals 1/10
½ is being divided by 5.