
7.36×9.7-73.6×0.84简便运算?
3个回答
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解:该算式的简便运算如下
7.36×9.7-73.6×0.84
=7.36×9.7-7.36×10×0.84
=7.36×9.7-7.36×8.4
=7.36×(9.7-8.4)
=7.36×1.3
=(10-2.64)×(1+0.3)
=(10-2.64)×1+(10-2.64)×0.3
=10-2.64+10×0.3-2.64×0.3
=10-2.64+3-0.792
=10+(3-2.64)-0.792
=10+(0.36-0.792)
=10-0.432
=9.568
7.36×9.7-73.6×0.84
=7.36×9.7-7.36×10×0.84
=7.36×9.7-7.36×8.4
=7.36×(9.7-8.4)
=7.36×1.3
=(10-2.64)×(1+0.3)
=(10-2.64)×1+(10-2.64)×0.3
=10-2.64+10×0.3-2.64×0.3
=10-2.64+3-0.792
=10+(3-2.64)-0.792
=10+(0.36-0.792)
=10-0.432
=9.568

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7.36×9.7-73.6×0.84
=73.6×0.97-73.6×0.84
=73.6×(0.97-0.84)
=73.6×0.13
=9.568
=73.6×0.97-73.6×0.84
=73.6×(0.97-0.84)
=73.6×0.13
=9.568
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7.36×9.7-73.6×0.84
=7.36×9.7-7.36×10×0.84
=7.36×(9.7-10×0.84)
=7.36×(9.7-8.4)
=7.36×1.3
=9.568
=7.36×9.7-7.36×10×0.84
=7.36×(9.7-10×0.84)
=7.36×(9.7-8.4)
=7.36×1.3
=9.568
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