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Maths

Fraction basics

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Equivalent fractions

Refresh your memory on fractions in the activity below.

A fraction can be written in different ways and still mean the same thing. These are called equivalent fractions. Look at the shaded areas in this rectangle.

two sets of fractions

so 3 over 5 = 6 over 10

You can produce lots of equivalent fractions by multiplying or dividing the top and bottom by the same number.

multiplied fraction

If you are asked to fill in a missing number, remember that the top and bottom must be multiplied or divided by the same number.

Question

What is the missing number? 4 over 5 = ? over 15

toggle answer

Answer

Here, the bottom is multiplied by 3, so you must multiply the top by 3.4 over 5 = 12 over 15

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Fractions

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