1.25乘67.875加25乘33.9375加1250乘0.053375

38.4✘13+30.8✘2✘13再答：13✘(38.4+30.8✘2)再答：8✘4✘25Ϩ

1.25乘9.1乘0.7加1.25乘9.1乘0.1=1.25乘9.1乘（0.7加0.1）=1.25X9.1X0.8=1.25X0.8X9.1=9.1

125x88+404x25=125x8x11+101x4x25=11000+10100=21100再问：35乘35加35乘64加35怎么巧算?

25x(56+72)x125=25x128x125=25x4x4x8x125=(25x4)x4x(8x125)=100x4x1000=400x1000=400000

0.9乘8.4加1乘0.84=9×0.84+0.84=（9+1）×0.84=10×0.84=8.472乘1.25=9*（8*1.25）=9*10=900.36乘2.4加76乘0.036=0.36×2.

75*16+25*16=(75+25)*16

48*15+25*52=48*15+52*15+52*10=(48+52)*15+520=1500+520=2020

75乘4.67加5.99乘25=25x3x4.67+5.99x25=25x(14.01+5.99)=25x20=500

37*65+25*65+16*38=65*62+16*38=65*62+（16+65-65）*38=65*(38+62)-51*38=65*100-（50+1）*2*19=65*100-100*19-

0.91乘99加91乘0.01=0.91*（99+1）=0.91*100=911.25乘88加12除以5分之4=1.25*88+12*1.25=1.25*（88+12）=1.25*100=125

32x1.25+12.5x6.8=32x1.25+68x1.25=(32+68)x1.25=100x1.25=125

38乘四分之一+17乘0.25加45乘25％＝38×0.25＋17×0.25＋45×0.25＝（38＋17＋45）×0.25＝100×0.25＝25

7.25乘67.875加725乘0.7875加7250乘0.053375简便计算7.25X67.875+725X0.7875+7250X0.053375=7.25X67.875+7.25X78.75+

因为4分之一=0.25=25%原式=（39+27+34)×0.25=[（39+1)+(27+33)]×0.25=100×0.25=25

41.2乘8.1加11乘1.25加53.7乘1.9=41.2乘(10减1.9)加11乘1.25加53.7乘1.9=412减41.2乘1.9+53.7乘1.9+11乘1.25=412+12.5乘1.9加

1/4*2003+2005*25+2004*1/4=1/4*(2003+2005+2004)=1/4*6012=15033375÷27x12=125x12=125x4x3=15006.6+0.6x20

49*51+(451*26+25*451)=49*51+51*451=51*500=25500

1.25乘6.17加0.125乘18.3=1.25*6.17+0.125*18.3=1.25*6.17+1.25*1.83=1.25*(6.17+1.83)=1.25*8=10

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.

53乘56加89乘25加56乘147加89乘25=53*56+89*25+56*147+89*25=56*(53+147)+89*(25+25)=56*200+89*50=11200+(90-1)*5