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 least common denominator (LCD)?

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The least common denominator (LCD) is the smallest multiple that two or more denominators share. It is used to add or subtract fractions.

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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 the least common denominator, convert the fractions, and then subtract 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 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 a mixed number?

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A mixed number is a whole number combined with a fraction. For example, 3 1/4 is a mixed number.

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

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To convert an improper fraction to a mixed number, divide the numerator by the denominator. The quotient is the whole number, and the remainder is the new numerator over the original denominator.

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