1计算练习一一、直接写得数1-0.01=0.2X0.3=2.5+6.5=1^0.01=二、下列各题怎样算简便就怎样算13.6+(4.28+6.4)+5.720.32三0.4=0.5-0.05=10三0.5=2.4X5=147.3—28.4—71.6139.46—(58.74+19.46)1.25X7X0.88.6^4.5+18.4^4.512.4三0.25三、竖式计算。0.37X2.4=1.55三3.8心(保留一位小数)56.5X0.24=1-0.01=9.6三320.2三0.01=2计算练习二一、直接写得数3.5X0.2=0.72三0.9=4.8+2=0.25X40=二、下列各题怎样算简便就怎样算(24+9.6三2.4)X0.53.83X4.56+3.83X5.445.6F3.53.65X10.16.72三3(7.2—0.4)X252.5X0.32X1.25三、竖式计算。93.6三0.052=0.59X0.027=4计算练习三一、直接写得数4.3+0.57=1.25X16=5.5+1.45=0.7X1.3=二、下列各题怎样算简便就怎样算6.136X86+86X3.8642三5=9.4三0.01=53.4^0.25^0.40.81三0.9=10.1X2.3=101X5.37.3X4.6+5.4X7.37.4X0.998.5—0.24—1.76三、竖式计算。1.24X0.15=0.39三7.8=1.03X5.5、直接写得数2三0.125=27三54=0.2+0.7=5.9-5=二、下列各题怎样算简便就怎样算3.75X0.5+6.25三2计算练习四2.5X12=1.4X0.3=6.3X2.1—0.4.52+6.48=0.75三0.5=3.65^2.5^45.6F350.35X2011.3+0.69+0.7三、竖式计算。3.8三4.5心（得数保留两位小数）0.86X1.2=5.63三6.1心（得数保留两位小数）0.8三2+0.03=1-0.25=1.8+0.02=8.01+0.19=3.5+6.5=6三18.4三6.3三0.5270F4.56、直接写得数二、下列各题怎样算简便就怎样算7.6—(3.05+2.6)20-3.7-7.3三、竖式计算。计算练习五12.3X99+12.30.38+9.6^3.2X5.436X5.5=3.45X21=18X3.06=5X0.7=1^0.25=12.5X8=0.16三0.04X20=16X2.5=55.8三10006.03X10=6.3+4.82+3.7—307X10.10.45X18132—43.7—0.32X12.5X2.55.6X1.257、直接写得数二、下列各题怎样算简便就怎样算三、竖式计算。计算练习六0.87X1.5=150X0.12=0.28X0.25=72三1.257.3+2.7—7.3+2.7(7.7+15.4)三79.9X348二、下列各题怎样算简便就怎样算7.6X21—7.61.5X1.2+8.8X1.5三、竖式计算。7.6X0.9=10.5X0.3=0.25X0.18a（得数保留一位小数）计算练习七、直接写得数3.4T.4=7.82—7.2=2.19+9.1=10.1—0.89=0.68+0.42=8.1—5.1=0.728—0.24=0.8+0.18=计算练习一、直接写得数0.89-0.25=0.5X400=1+3.89=0.081X10=二、下列各题怎样算简便就怎样算19.9+11.1=187三1000=75210=100-35.22=7.12X4-1.12X445022.52212.5X8.8(125—1.25)X0.83.5X0.4+3.5X0.69三、竖式计算。0.320.12=104.78226^34.220.8=（得数保留一位小数）验算计算练习2.5X0.4=2.4X5=0.22X4=0.9—0.52=3.99X1=0X3.52=2.5三58.4三726.7—0.5X5—7.510、直接写得数二、下列各题怎样算简便就怎样算392(1.3X5)2.2三4+0.6F448.4+2.78+51.6—0.48三、竖式计算。52.78226=1.86X0.47=验算：3.8127心（得数保留两位小4.8325+2.17254223.53.07—0.38—1.621.29+3.7+2.71+6.38—2.45—1.551110.3X2=2.01X0=1.76+0.190.7X4=3.25X0=7.5+4.9—6.5计算练习十一、直接写得数0.8X7=1.5X7=1.02X8=5X0.6=0.9X0.3=3.5X0.2=二、下列各题怎样算简便就怎样算4.8+8.63+5.2+0.375.93+0.19+2.812.35+1.713+0.287+7.651.57+0.245+7.43计算练习十一一、直接写得数10X0.05=0.13X7=0.21X100=0.05X4=4X0.3=2.3X4=二、下列各题怎样算简便就怎样算0.134+2.66+0.8661.27+3.9+0.73+16.17.6X0.8+0.2X7.60.85X1990.25X8.5X4124.1X2=3.5X0.01=0.32X4030.25X360.5X0.4=2.5X4=0.25X0.73X4计算练习十二一、直接写得数0.4X50=30X0.1=2.6X3=0.35X0.2=7.5X0.1=1—0.08=二、下列各题怎样算简便就怎样算3.25+1.79—0.59+1.7523.4—0.8—13.4—7.23.2+0.36+4.8+1.641.23+3.4—0.23+6.6计算练习十三一、直接写得数1.25三0.25=3.9+0.39=4.8+5.2=4三0.25=3三4=8.1三9=二、下列各题怎样算简便就怎样算12.7—(3.7+0.84)36.54—1.76—4.5414—7.32—2.682.64+8.67+7.36+11.332.31X1.2X0.5137.6X0.8+0.2X7.60.85X1990.25X8.5X41.28X8.6+0.72X8.60.8X(4.3X1.25)12.5X0.96X0.83.12+3.12X9910.4—9.6X0.3528.6X101—28.6、直接写得1.25X8=2.6X3=7.5X0.1=0.9X0.3=二、下列各题怎样算简便就怎样计算练习十五4.1X2=1X0.06=(4.23+6.17)X0.80.86X15.7—0.86X14.70.35X0.2=9X0.5=2.4X102计算练习十四一、直接写得数6—...
