4.45×0.454×0.9的简便运算?
2个回答
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4.45x0.454x0.9
=4.45x2x0.227x0.9
=8.9x0.227x0.9
=(9-0.1)x0.227x0.9
=(9x0.227-0.1x0.227)x0.9
=(2.043-0.0227)x0.9
=2.0203x0.9
=1.81827
=4.45x2x0.227x0.9
=8.9x0.227x0.9
=(9-0.1)x0.227x0.9
=(9x0.227-0.1x0.227)x0.9
=(2.043-0.0227)x0.9
=2.0203x0.9
=1.81827
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