Ms. Garcia Math
Fractional Coins
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Metal currency minted in denominations of 50, 25, 10 cents, 5 cents and 1 cent.
Coins as fractions
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The portion of one dollar that any coin represents can be written as a fraction.
50 cents = 50/100 = 1/2
25 cents = 25/100 = 1/4
10 cents = 10/100 = 1/10
5 cents = 5/100 = 1/20
1 cent = 1/100
Comparing Fractions with Like Numerators
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As the denominator gets larger, the fraction gets smaller.
Comparing Fractions with Like Denominators
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As the numerator increases, the value of the fraction increases.
Comparing Unlike Fractions 1
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Convert each fraction to decimals, and then compare the decimals.
Example: What discount is bigger: 1/4 off the normal price, or 3/10 off the normal price?
Comparing Unlike Fractions 2
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Convert these fractions to equivalent fractions with a common denominator (in order to compare them more easily)
Example: Which fraction is greater 1/4 or 3/10?
Comparing Unlike Fractions 3
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Cross-Multiply to compare
When you multiply the top and bottom of a fraction by the same amount, it doesn't change its value.