Adding and Subtracting Fractions with unlike Denom.

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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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What does it mean to have unlike denominators?

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How do you find the least common denominator (LCD) of two fractions?

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To find the LCD, identify the least common multiple (LCM) of the denominators. For example, the LCD of 4 and 6 is 12.

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What is the LCM of 2, 4, and 6?

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The LCM of 2, 4, and 6 is 12.

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How do you add fractions with unlike denominators?

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To add fractions with unlike denominators, first find the least common denominator, convert each fraction to an equivalent fraction with the LCD, and then add the numerators.

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What is the first step in subtracting fractions with unlike denominators?

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The first step is to find the least common denominator (LCD) of the fractions.

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How do you convert mixed numbers to improper fractions?

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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 the result over the original denominator.

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