$\"\"$

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The expression is $\"\"$ of 40.

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1% method:

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Think: $\"\"$

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1% of 40 is 0.4The expression can be $\"\"$ of 0.4.

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$\"\"$

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$\"\"$

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$\"\"$ (Think: $\"\"$ ) $\"\"$

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Using 1% method, 0.08 is $\"\"$ of 40.