4.28×3.6+6.1×4.28+5.28×9.7简单算法?
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4.28×3.6+6.1×4.28+5.28×9.7
=4.28×(3.6+6.1)+5.28×9.7
=4.28×9.7+5.28×9.7
=9.7×(4.28+5.28)
=9.7×9.56
=92.732
=4.28×(3.6+6.1)+5.28×9.7
=4.28×9.7+5.28×9.7
=9.7×(4.28+5.28)
=9.7×9.56
=92.732
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