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7 Cards in this Set

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  • Back
What is an Fraction
A fraction is a part of a whole. There are two numbers to every fraction: the top number is called the NUMERATOR and the bottom number is called the DENOMINATOR
Equivalent fractions
Equivalent fractions are fractions that look different but
show exactly the same amount.You can make equivalent fractions by multiplying or
dividing the numerator and denominator by the same number.You can simplify fractions by dividing the numerator and
denominator by the same number. This is called cancelling.
Sometimes fractions will cancel more than once.
Converting a fraction to a decimal
You can use a calculator to turn a fraction into a decimal.
Just divide the numerator by the denominator.
Improper and mixed fractions
An improper fraction has a numerator that is bigger than its denominator, for example 10/7
9/4 is an improper fraction. It means nine quarters. If you think of this as cakes, nine quarters are more than two whole cakes. It is 2 1/4 cakes.
2 1/4 is a mixed fraction because it has a whole number and a fraction together.
Comparing fractions
To compare fractions, you must first change them so they have
the same denominator.
To compare 2/3 and 3/5.
First look at the denominators (the bottom numbers). Decide which number they both go into. They both go into 15. Change both numbers into 15ths.
Fractions of quantities
To find a fraction of a quantity:
a. Divide the quantity by the denominator
b. Multiply the answer you get by the numerator.
To find 2/5 of £15, for example:
a. Divide 15 by 5 (the denominator). 15 ÷ 5 = 3
b. Multiply the answer, 3, by 2 (the numerator). 3 x 2 = 6
c. So 2/5 of £15 is £6
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