Adding and subtracting fractions

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What is a fraction?

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A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

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How do you add fractions with different denominators?

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To add fractions with different denominators, find a common denominator, convert the fractions, and then add the numerators.

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What is the least common denominator (LCD)?

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The least common denominator is the smallest multiple that two or more denominators share.

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How do you subtract fractions?

Back

To subtract fractions, ensure they have a common denominator, then subtract the numerators and keep the denominator the same.

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Back

The first step is to find the least common denominator, which is 6 in this case.

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What does it mean to have a common denominator?

Back

Having a common denominator means that two or more fractions share the same denominator, allowing for easy addition or subtraction.