苏教版四年级上册小数计算专项练习

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1、小数计算专项练习计算。1、直接写出得数。0.2X0.4=2.84-0.7二0.307X100=5.64-10=0.76-0・6=1.8三0.3二1.2X100=6.4H-0.02=5.64-10=0.214-0.7=0.2X0.4=0.5+0.3=1.2-0.7=0.45+0.25=1-0.47=0.6X0.7=9X0.04=0.8X100=1.4X0.5=2.64-2=14-0.2=6.44-0.08=254-1000=0.2+0.8=9.8-1.2=0.48x1000=0.051x100=0.074-10=6.84-100=41.34-10

2、00=3.5X10=4.6—100=100X0.9=44-0.5=0.85-0.05=0.7+0.23=1.5X6=0.2X0.5=9.64-4=0.544-0.6=2、竖式。你能给下面各题的积点上小数点吗？8.06X0.25=4.62^1.5=*7.93十2.6二验算8.772.916.5x0.9X0.04x0.678329169904.60.642.05x2.8X7.5x3・62.）列竖式计算。（带*号要验算。）3.25X8=50.4一48二*1.21X18=验算6.1于0.051.8亠0.240.9亠00450.672-4<53.3+2.

3、47=4.3-2.18=0.37x2.5=7.264-2.4=0.13x2.04=0.144-?0.4=9.75X1.5=3.84-0.27=964-0.64=16.94-0.25=14.4^0.18=1.34-0.026=计算下面各题，得数保留两位小数。0.73x2.028.4x0.69先说说下面各题怎样移动小数点，再计算5.9x0.760.25)50.1679766.8)340.042壬D.35=(0.42-035=•4.2十0.3弓=I3.7-r0.4=(I于43.7r0.04=I

4、437十0.004=«»-4你能直接在。里填、弾或吗?2

5、.07专0.9(2.073.96-r1.1(]3.963.75专1.503.751.14于0.95)1.143、怎样算简便就怎样算。4.02X3.02+4.02X6.987.09X10.8-0.8X7.0949.5+4.95X0.97.2x0.6+0.4x7.23.7x1.020.25x240.25x32x1.2516.8X10.10.25x9.93.1+25.78+6.90.59+2.94+1.4115.25+4.72+4.75+5.28((11.0牛1.76)X0.75)4-0.150.8X[(1.45—0.13)4-0.15]0.25x3

6、61.28x8.6-0.28x8.62.4x1.028.1〜(0.9x0.3)2.12-(1.12+3x0.33)8.53+6-8.53+6你能用简便方法计算吗？0.73x0.25x40.37+1.79+0.637.6x0.8+0.2x7.65.78+0.84+0J612.5x0.96x81.27+3.9+0.73+6.1计算下面各题，注意使用简便方法'0.67x99+0.674.25&2.5*101一1.76.8+1.25x6.8x8