Fractions Flashcards

1
Q

What is a Fraction?

A

Fractions show parts of whole numbers.

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2
Q

What are equivalent fractions?

A

Fractions that are worth exactly the same, even though they are written differently. e.g. 1/4 = 2/8

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3
Q

How do you make equivalent fractions?

A

You multiply the numerator and denominator by the same number.

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4
Q

How can you compare the size of fractions?

A

You can find equivalent fractions that have the same denominator as each other, and then compare the numerators, or you can convert the fractions into decimals.

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5
Q

How do you convert a mixed number to an improper fraction?

A

If you have a mixed fraction a b/c the improper fraction will be (ac + b) / c.

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6
Q

How do you or subtract two fractions?

A

You have to find equivalent fractions that all have the same denominator. You then add or subtract the numerators, put them over the denominator and simplify the fraction.
a/b + c/b = (a+c)/b
a/b - c/b = (a-c)/b

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7
Q

How do you multiply two fractions together?

A

a/b x c/d = ac/bd

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8
Q

How do you divide two fractions?

A

(a/b) / (c/d) = ad/cb

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9
Q

How do you find a fraction of an amount?

A

You simply multiply the fraction by the amount.

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