1. lesson 9.notebook September 06, 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
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2. lesson 9.notebook September 06, 2012
Examples (Lesson 9):
Simplify.
A) 5/6 + 1/6
B) 4/5 ­ 3/5
C) 3/5 x 1/2 x 3/4
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3. lesson 9.notebook September 06, 2012
D) 3/3 + 3/3 + 2/3
E) 4/7 x 2/3
F) 5/8 ­ 5/8
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4. lesson 9.notebook September 06, 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
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5. lesson 9.notebook September 06, 2012
Find the missing number.
L) 5/8 a = 1
M) 6m = 1
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6. lesson 9.notebook September 06, 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
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