1. lesson 9.notebook September 07, 2012
Assignment:
1­­>Set 10 (evens) ­ Due Tuesday (9/11)
2­­>Test #1 ­ Tuesday (9/11)
1

2. lesson 9.notebook September 07, 2012
Lesson 9 Warm­Up:
1) Write 26,500 in expanded notation.
2) List all of the factors of 18.
3) List all of the factors of 24.
4) What is the GCF of 18 and 24?
5) A dime is what fraction of a dollar?
2

3. lesson 9.notebook September 07, 2012
Lesson 9:
*FYI...
to add or subtract fractions, we must write them with common
denominators
*AND...
To multiply fractions­­multiply the tops, then the bottoms­­then
simplify!
*ALSO...
The product of a number and its reciprocal is one
3

4. lesson 9.notebook September 07, 2012
Examples (Lesson 9):
Simplify.
A) 5/6 + 1/6
B) 4/5 ­ 3/5
C) 3/5 x 1/2 x 3/4
4

5. lesson 9.notebook September 07, 2012
D) 3/3 + 3/3 + 2/3
E) 4/7 x 2/3
F) 5/8 ­ 5/8
5

6. lesson 9.notebook September 07, 2012
G) 14 2/7% + 14 2/7%
H) 87 1/2% ­ 12 1/2%
Write the reciprocal of the following:
I) 4/5
J) 8/7
K) 5
6

7. lesson 9.notebook September 07, 2012
Find the missing number.
L) 5/8 a = 1
M) 6m = 1
7

8. lesson 9.notebook September 07, 2012
O) How many 2/3's are in 1?
P) If a/b = 4, what does b/a =?
Q) What property of multiplication is illustrated by this equation?
2/3 x 3/2 = 1
8