125×65÷125×65怎么巧算?

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125×65÷125×65怎么巧算?
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125×65÷125×65怎么巧算?
125×65÷125×65怎么巧算?

125×65÷125×65怎么巧算?
125×65÷125×65
=125÷125x65x65
=1x(65x65)
=1x4225
=4225