2.5乘0.875加0.25乘1.25的简便运算

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2.5乘0.875加0.25乘1.25的简便运算2.5乘0.875加0.25乘1.25的简便运算2.5乘0.875加0.25乘1.25的简便运算2.5*0.875+0.25*1.25=2.5*0.87

2.5乘0.875加0.25乘1.25的简便运算
2.5乘0.875加0.25乘1.25的简便运算

2.5乘0.875加0.25乘1.25的简便运算
2.5*0.875+0.25*1.25
=2.5*0.875+2.5*1.25/10
=2.5*(0.875+1.25/10)
=2.5*(0.875+0.125)
=2.5
请参考.

2.5*(0.875+0.125)=2.5

2.5×0.875+0.25×1.25
=2.5×0.875+2.5×0.125
=2.5×(0.875+0.125)
=2.5×1
=2.5

=2.5*0.875 +2.5*0.125
=2.5*(0.875+0.125)
=2.5*1
=2.5

把小数化为分数后应用提公因式法进行计算