1) This document contains notes from a math lesson on October 9th, 2012. It includes assignments that are due, examples of fraction multiplication and division, and exercises for students to work through. 2) The lesson covers multiplying and dividing fractions, including how to simplify fractions after performing the operations. Examples are provided such as 1/4 x 1/2 and 3/4 x 1/3. 3) Students are given practice problems to work through involving fraction multiplication, division, and finding fractional parts of numbers.

1. lesson 22.notebook October 09, 2012
Assignment:
1­­>Set 23 (odds) ­ Due Tomorrow (10/10)
2­­>Test #2 signed??
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2. lesson 22.notebook October 09, 2012
Lesson 22 Warm­Up:
1) Classify this triangle by sides and by angles
AND state the measure of each angle.
C
A
B
2) Alex read 20 pages per hour. How many pages can he read in 1 1/4
hours?
3) If four boxes weigh 20 pounds, how much would six boxes weigh?
4) What is 25% of 400?
5) Simplify: 4 + (11 + 32) x 23
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3. lesson 22.notebook October 09, 2012
Lesson 22:
FYI­­>
*To multiply fractions ­
if possible, "cancel" first ­
then multiply tops ­
then multiply bottoms
SIMPLIFY!!
*To divide fractions ­
flip the 2nd fraction first ­
if possible, "cancel" ­
then multiply tops ­
then multiply bottoms
SIMPLIFY!!
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4. lesson 22.notebook October 09, 2012
Examples ­ Lesson 22
Simplify.
A) 1/4 x 1/2
B) 1/2 x 3/4
C) 5/6 x 2/3
D) 3/4 x 1/3
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5. lesson 22.notebook October 09, 2012
E) What number is 1/2 of 3/5?
F) What number is 2/3 of 3/4?
Write the multiplicative inverse of the number.
G) 3/8
H) 4
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6. lesson 22.notebook October 09, 2012
I) How many 2/3's are in 1?
J) 1 3/5
K) 1 1/6
L) How many 1/2's are in 3/4?
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7. lesson 22.notebook October 09, 2012
Simplify.
M) 2/3 3/4
N) 3/4 2/3
O) 3/4 1/3
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