简算 1.25*1.4+6.6*0.25

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简算1.25*1.4+6.6*0.25简算1.25*1.4+6.6*0.25简算1.25*1.4+6.6*0.25原式=(1.25×0.8)×1.75+1.65×(4×0.25)=1×1.75+1.6

简算 1.25*1.4+6.6*0.25
简算 1.25*1.4+6.6*0.25

简算 1.25*1.4+6.6*0.25
原式=(1.25×0.8)×1.75+1.65×(4×0.25)
=1×1.75+1.65×1
=1.75+1.65
=3.4

原式=0。25*5*1.4+6.6*0.25
=0.25*(5*1.4+6.6)
=(1/4)*13.6
=3.4

=1.25*(0.4+1)+(6+0.6)*0.25
=1.25*0.4+1.25+6*0.25+0.6+0.25
=0.1+1.25+1.5+0.15
=(0.1+0.15)+(1.25+1.5)
=0.25+1.35
=1.6