What are 'like' fractions?

Fractions that have the same bottom number (denominator).

Explain how to find a common denominator for two fractions with different denominators using the 'easiest common denominator' method.

Multiply the two different bottom numbers together. The result is the common denominator.

Grade 4th Grade · Math · 30 min

I can identify and compare fractions with common denominators.

mathantics · 5:07

Math Antics - Common Denominator ECD

3 key concepts

1
To add or subtract fractions with different bottom numbers, you must first change them into fractions with a common denominator.
2
One way to find a common denominator is to multiply the two different bottom numbers; then, multiply each fraction by a 'whole fraction' made from the opposite denominator.
3
After changing to 'like' fractions, add or subtract the top numbers and keep the bottom number the same.

3 questions · Short answer

Quick comprehension check

“Which fraction is bigger: 2/7 or 3/7?”

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Teacher GuideComplete lesson plan

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