Add and subtract fractions that have different denominators

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Questions #: 8
Time: 5 minutes
Pass Score: 80.0%
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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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Correct Answer

Explanation

Add the following fractions

$\frac35 + \frac13$

POINTS (1)

Correct Answer

Explanation

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
POINTS (1)

Correct Answer

Explanation

Add the following fractions and simplify if possible

$\frac17 + \frac23$

POINTS (1)

Correct Answer

Explanation

Subtract

$\frac52 - \frac73$

POINTS (1)

Correct Answer

Explanation

Subtract

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

POINTS (1)

Correct Answer

Explanation

When adding (or subtracting) two fractions with different denominators

If the smaller denominator is a factor of the larger denominator

POINTS (1)

Correct Answer

Explanation

Add

$-5 + \frac34$

POINTS (1)

Correct Answer

Explanation

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