# Add and subtract fractions that have different denominators

QUESTION OF
calculate
Questions #: 8
Time: 5 minutes
Pass Score: 80.0%
Style
Mode

#### Least Common Denominator

The least common denominator (LCD) for a set of fractions is the smallest number each denominator will divide exactly (divide with no remainder)

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#### Explanation

$\frac35 + \frac13$

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#### Put the following steps in order to find the right process of adding fractions with different denominators

Please drag and drop the options to sort them
Add or subtract the numerators and write the sum or difference over the LCD
Rewrite each fraction as an equivalent fraction with the LCD as the denominator
Find the LCD
Simplify the result, if possible
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#### Add the following fractions and simplify if possible

$\frac17 + \frac23$

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#### Subtract

$\frac52 - \frac73$

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#### Subtract

$\frac25 - \frac{11}{15}$

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#### When adding (or subtracting) two fractions with different denominators

If the smaller denominator is a factor of the larger denominator

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#### Explanation

$-5 + \frac34$

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