Year 5
Adding up to 4 fractions with denominators of 10 and 100

Skill you are practising: Adding up to 4 fractions with denominators of 10 and 100

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Tip

If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add the numerators and simplify. As an example

is the same as

100

100

We can utilize this fact to rewrite any fraction that has a denominator of 10 as a fraction with the denominator of 100. As an example, check these two fractions out,

100

, and

100

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