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0.25x5.6x0.5简便计算。

解:依题意得算式,0.25*5.6*0.5=0.25*(4*2*0.7)*0.5=0.25*4*2*0.7*0.5=1*0.7*(2*0.5)=0.7*1=0.7即0.25*5.6*0.5=0.7

0.25x4.8x0.5用简便法算=0.25x4x1.2x0.5=1x0.6=0.6

=0.25*0.5*3.7=0.125*3.7=0.4625

0.25*0.5÷0.25*0.5 =(0.25÷0.25)*(0.5*0.5) =1*0.25 =0.25

0.25*3.7*4=1/4*3.7*4=3.7

640.250.51.25=4*2*80.250.51.25=(4*0.25)*(2*0.5)*(8*1.25)=1*1*10=10

0.25+0.8=1.05

0.25÷(0.5*0.25)=0.25÷0.25÷0.5=1÷0.5=2

你好!0.25x38+0.5=0.25x38+0.25x2=0.25x(38+2)=0.25x40=10 仅代表个人观点,不喜勿喷,谢谢.

0.25*2.4*5.2=0.25*(4*0.6)*5.2=0.25*4*0.6*5.2=1*0.6*5.2=3.12

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