\"\"

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The expression is \"\" of 72.

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Fraction method:

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88 is about 90 and 72 about 70.

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Think \"\".

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The expression can be \"\" of 70.

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\"\"

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\"\"        (Think: \"\")

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\"\"             (Think: \"\")\"\"

\

Using Fraction method, 63 is \"\" of 72.