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Published byVirginia Armstrong Modified over 8 years ago

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Master Math ™ Problems Finding the Lowest Common Denominator (LCD)

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Master Math ™ Problems 1.Arrange denominators in horizontal row as dividends. Place under upside down division sign Finding the Lowest Common Denominator 8 16

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Master Math ™ Problems 1.Arrange denominators in horizontal row as dividends. Place under upside down division sign 2.Find smallest number that divides into two or more denominators an exact number of times — 2. Make this number the divisor Finding the Lowest Common Denominator 2 8 16

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Master Math ™ Problems 3.Divide denominators by divisor and write quotients below Finding the Lowest Common Denominator 2 8 16 4 8

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Master Math ™ Problems 3.Divide denominators by divisor and write quotients below 4.Find smallest number that divides into two or more quotients an exact number of times — 2. Divide quotients by this divisor and write quotients below Finding the Lowest Common Denominator 2 8 16 2 4 8

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Master Math ™ Problems 2 8 16 2 4 8 2 2 4 2 1 2 1 1 5.Repeat steps 2–3 until no more quotients can be divided. Bring down quotients not divisible by divisor if necessary — 1 Finding the Lowest Common Denominator

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Master Math ™ Problems 5.Repeat steps 2–3 until no more quotients can be divided. Bring down quotients not divisible by divisor if necessary — 1 6.Multiply all divisors and quotients together to find lowest common denominator — 16 Finding the Lowest Common Denominator 2 8 16 2 4 8 2 2 4 2 1 2 1 1 2 2 2 2 1 1 = 16

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