Mastering Fractions: Adding and Subtracting Unlike Denominators

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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 the term 'denominator' mean?

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The denominator is the bottom part of a fraction that indicates how many equal parts the whole is divided into.

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What does the term 'numerator' mean?

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The numerator is the top part of a fraction that indicates how many parts of the whole are being considered.

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What is an unlike denominator?

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Unlike denominators are denominators that are different from each other in a fraction.

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

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The least common denominator (LCD) is the smallest number that is a multiple of both denominators.

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The LCD 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 LCD, convert each fraction to an equivalent fraction with the LCD, then add the numerators.

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How do you subtract fractions with unlike denominators?

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To subtract fractions with unlike denominators, find the LCD, convert each fraction to an equivalent fraction with the LCD, then subtract the numerators.

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