adding and subtracting fractions

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What is a fraction?

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A fraction represents a part of a whole. It consists of a numerator (top number) and a denominator (bottom number). For example, in the fraction 1/2, 1 is the part and 2 is the whole.

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What does it mean to add fractions?

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Adding fractions means combining two or more fractions to find a total. To add fractions with the same denominator, simply add the numerators and keep the denominator the same.

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What does it mean to subtract fractions?

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Subtracting fractions means finding the difference between two fractions. To subtract fractions with the same denominator, subtract the numerators and keep the denominator the same.

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How do you add fractions with different denominators?

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

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How do you subtract fractions with different denominators?

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

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What is a common denominator?

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A common denominator is a shared multiple of the denominators of two or more fractions. It allows you to add or subtract fractions easily.

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The first step is to find a common denominator. The common denominator for 3 and 6 is 6.

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The first step is to find a common denominator. The common denominator for 9 and 3 is 9.

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