PERCENT
by: Charmaine C and Julie I
!
100% is everything 100/100
50% is 50/100 or 1/2 = TO FIND 50%, YOU CAN DIVIDE IT BY 2
10% IS 10/100 or 1/10 = TO FIND 10%, YOU CAN DIVIDE IT BY 10
25% 25 out of 100 or 25/100 = 1/4, TO FIND 25% YOU CAN DIVIDE BY 4
Convertion :
Percent --> Fraction
- %/100 89% 89/100
Percent --> Decimal
- percent number divided by 100
% ÷ 100
EXAMPLE : 89% ÷ 100 = .89
Percent --> Ratio
- numerator : denominator
percent /100
100 - percent = part 2
(part 1)
Fraction --> Percent
- numerator divided by denominator = ANSWER x 100 = percent
EXAMPLE : 3 divided by 4 x 100 = 75%
Decimal --> Percent
- decimal multiply by 100
EXAMPLE : .42 x 100 = 42%
Ratio --> Percent
- part 1 : part 2
numerator / denominator = decimal x 100 = percent
Percent Questions :
1.) What is 20% of 156?
100/100 = 1
156/100 = 1.56
1.56 x 20 = 31.2
31.2/156 = 0.2
20/100 = 0.2
2.) 30 is 29% of what number?
29/29 = 1
30/29 = 1.034
1.034 x 100 = 103.4
3.) 44 is what percent of 62?
60/41 = __ /100
60 divided by 41 = 1.46 x 100 = 146.3
60/41 = 1.46
146.3/100 = 1.46
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MATH UNPROJECT
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