What is the Gcf of 81 and 27?

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What is the Gcf of 81 and 27?

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Answer 1 · 2016-12-14T11:11:31

$27$ $27$

Explanation:

This method uses only $subtraction$ $color(blue)"subtraction"$ to find the GCF.

$∙ subtract smaller number from larger number$ $•" subtract smaller number from larger number"$

$∙ Repeat this until a common value is obtained$ $•" Repeat this until a common value is obtained"$

$∙ The common value is the GCF$ $•" The common value is the GCF"$

$The starting numbers are 81 and 27$ $" The starting numbers are 81 and 27"$

$\Rightarrow 81 - 27 = 54 \to numbers are now 54 and 27$ $rArr81-27=54rarr" numbers are now 54 and 27"$

$\Rightarrow 54 - 27 = 27 \to numbers are now 27 and 27$ $rArr54-27=27rarr" numbers are now 27 and 27"$

$common value of 27 reached$ $" common value of 27 reached"$

$Hence GCF = 27$ $" Hence GCF = 27"$

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What is the Gcf of 81 and 27?

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