3.73×59+4.3×37.3的巧算递等式怎么
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3.73×59+4.3×37.3
=3.73x59+4.3x(10x3.73)
=3.73x59+3.73x43
=3.73x(59+43)
=3.73x102
=3.73x(100+2)
=3.73x100+3.73x2
=373+7.46
=380.46
=3.73x59+4.3x(10x3.73)
=3.73x59+3.73x43
=3.73x(59+43)
=3.73x102
=3.73x(100+2)
=3.73x100+3.73x2
=373+7.46
=380.46
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