Add and Subtract Fractions Review

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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). For example, in the fraction 1/2, 1 is the numerator and 2 is the denominator.

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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 each fraction to an equivalent fraction with that denominator, and then add the numerators.

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What is the simplest form of a fraction?

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The simplest form of a fraction is when the numerator and denominator have no common factors other than 1. For example, 4/8 can be simplified to 1/2.

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How do you subtract fractions?

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To subtract fractions, ensure they have the same denominator. If they don't, find a common denominator, convert the fractions, and then subtract the numerators.

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What is a mixed number?

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A mixed number is a whole number combined with a fraction. For example, 2 1/3 is a mixed number, where 2 is the whole number and 1/3 is the fraction.

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How do you convert a mixed number to an improper fraction?

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To convert a mixed number to an improper fraction, multiply the whole number by the denominator, add the numerator, and place that sum over the original denominator. For example, 2 1/3 becomes (2*3 + 1)/3 = 7/3.

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What is the process to find a common denominator?

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To find a common denominator, identify the least common multiple (LCM) of the denominators of the fractions you are adding or subtracting.

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How do you simplify a fraction?

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To simplify a fraction, divide both the numerator and the denominator by their greatest common factor (GCF). For example, to simplify 6/8, divide both by 2 to get 3/4.

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