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0.78×2.2÷5
=0.78×0.22×2
=(0.8-0.02)×0.44
=0.352-0.0088
=0.3432
=0.78×0.22×2
=(0.8-0.02)×0.44
=0.352-0.0088
=0.3432
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展开全部
=0.78÷5×2.2
=0.156×2.2
=0.156×2+0.156×0.2
=0.312+0.0312
=0.3432
=0.156×2.2
=0.156×2+0.156×0.2
=0.312+0.0312
=0.3432
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0.78×2.2÷5=如何简便计算?
0.78×2.2÷5
=(1一o.22)x2.2÷5
=(l一0.22)x0.44
=0.44一0.0968
=0.3432
0.78×2.2÷5
=(1一o.22)x2.2÷5
=(l一0.22)x0.44
=0.44一0.0968
=0.3432
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展开全部
0.78*2.2÷5
=1.716÷5
=0.3432
=1.716÷5
=0.3432
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0.78X(2.2÷5)
=0.78X0.44
=0.78X(0.4+0,04)
=0.78X0.,4+0.78x0,04
=0.312+0.0312
=0.3432
=0.78X0.44
=0.78X(0.4+0,04)
=0.78X0.,4+0.78x0,04
=0.312+0.0312
=0.3432
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