小学四年级下册数学小数乘法练习

小学四年级下册数学小数乘法练习小学四年级下册数学小数乘法练习题一、直接写得数3.8×2=10×0.7=13.9×0=508÷100=5.5×1=1.8×0.5=3.2×3=13.1×0.3=0.08×1.25=2.5×4=2.5×8=0.5×0.2=0.6×0.1=0.7×0.8=2.5×8×0=125×0.8=二、竖式计算2.8×0.7=13×0.15=0.39×0.6=0.38×600=7.05×2.4=0.46×7.9=89.3×7.6=60.5×400=三、混合运算12.5×8.2×80.23×1.4＋0.23×8.60.125×（80＋0.8）0.4×0.16×2.55.6×1017.85×991.15×99＋1.1516.2×101－16.24.5×7.8＋5.5×7.8四、一斤香蕉3.8元，一斤苹果4.2元。强强的妈妈各买回5斤，需要准备多少钱？小学四年级下册数学小数乘法计算练习一、直接写得数3.8×2=10×0.7=13.9×0=508÷100=5.5×1=1.8×0.5=3.2×3=13.1×0.3=0.08×1.25=2.5×4=2.5×8=0.5×0.2=0.6×0.1=0.7×0.8=2.5×8×0=125×0.8=二、填空1、8个0.8是()，30个0.25的和是()。2、每千克梨4.8元，小明买了0.25千克，需要()元。3、比较大小1.8×0.991.81.8×0.990.998.5×1.20.85×124、0.7×5表示()。5、8×b，当b()时，积等于8;当b()时，积小于8;当b()时，积大于8。7、根据算式45.5×3.6=163.8写出两个积为16.38的乘法算式①，②。45.5×360＝0.455×360＝8、一个长方形的长是0.8米、宽是0.24米，它的周长是(）米面积是(）。三、小法官1、0.125×6.3×8可以用分配律简便计算。()2、4.32×0.4的积的小数位数一定是两位。()3、4.25×1.8-1.8=4.25×0()5、两个数相乘，积一定比任何一个乘数大。()6、小数点后面添上0或去掉0，小数大小不变。()7、小数乘法列竖式时，一定要对齐数位。()四、对号入座。(选择正确答案的序号填在括号里)1、12.5×9×8=9×(12.5×8)是根据A、乘法交换律B、乘法结合律C、乘法交换律和结合律2、7.6×10.1=（）A、7.6×10+0.1B、7.6×10+7.6×0.1C、7.6×10+7.6×13、不用计算，下面（）的积最大。A、0.7×80B、0.7×0.8C、0.7×0.084、5.36×2.5的积有（）位小数。A、3B、2C、1五、竖式计算2.8×0.7=13×0.15=0.39×0.6=0.38×600=7.05×2.4=0.46×7.9=89.3×7.6=60.5×400=3.05×18=0.37×2.31=4.6×18.9=40.5×4.2=混合运算12.5×8.2×80.23×1.4＋0.23×8.60.125×（80＋0.8）0.4×0.16×2.55.6×1017.85×991.15×99＋1.1516.2×101－16.24.5×7.8＋5.5×7.83、脱式计算，能简便的要简便计算。2.8+7.2×0.810.34×2.5×0.41.25×11×4×0.88.93×5.7＋8.93×3.3＋8.934.82×1020.7×0.46+0.7×0.54六、解决问题1、汽车每小时行45千米，火车的速度是汽车速度的2.8倍，飞机的速度是火车速度的7.5倍，飞机每小时飞行多少千米?2、修一条水渠，原计划每天修0.24千米，实际每天比原计划多修0.06千米，12天后还差0.4千米没有修，这条水渠长多少千米?3、苹果每千克3.8元，梨每千克2.9元，妈妈买了3千克苹果和5千克梨，一共花了多少钱?4、每人每天节约0.21千克水，50个人4月份能节约多少千克水？5、叔叔按每千克3,8元的价格批发了200千克苹果，按每千克5元卖了120千克之后，剩下的每千克4.5元，卖完后，叔叔能赚多少钱？6、一斤香蕉3.8元，一斤苹果4.2元。强强的妈妈各买回5斤，需要准备多少钱？博雅学堂四年级数学小数乘法练习题题3.8×0.12=0.57×0.6=6.4×0.5=6.7×5.8=9.8×3.8=7.8×6.4=4.6×2.7=4.5×2.7=5×1.6=3×0.6=3×1.2=6.7×7.6=5.4×7.8=2.6×3.6=3.5×1.7=8.3×2.6=1.4×0.7=4.5×2.8=7.4×2.6=6.2×1.4=5.4×2.6=2.3×1.4=3.7×1.8=4.5×2.3=5.2×1.6=3.6×0.8=0.66×1.4=6.5×5.8=0.72×0.49=0.42×0.28=0.24×0.19=2.4×1.3=0.72×0.27=0.78×0.32=0.65×0.04=0.23×0.16=0.29×0.15=0.16×0.19=4×1.2=7×4.6=6×0.37=0.28×0.27=0.75×0.42=2.3×1.9=8×0.64=2.7×0.8=10×4.2=7.1×3.9=4.3×1.4=2.6×1.6=0.8×0.3=0.65×0.4=0.91×0.6=1.8×1.6=4.8×0.5=3.2×0.4=9.8×4.8=12×8.3=15.2×6.5=20.1×11.1=13.34×10.32=6.52×0.48=6.3×5.1=8.7×3.6=14.3×4.3=1.5×0.54=10×4.2=2.47×3.24=2.98×0.56=5.64×1.78=8.02×0.98=7.1×3.9=2.8×11.39=12.53×4.67=7.2×6.45=1.65×3.35=7.96×1.45=60×1.27=6.07×4.89=5×0.41=0.9×0.5=2×0.7=1.2×4.3=5.4×2.7=6×2.9=3.7×1.7=4.2×0.8=7.5×2.5=2.2×4.3=9.5×7.1=3.5×1.6=5.2×2.8=7.8×1.6=9.6×4.1=10×4.2=5.1×2.5=4.1×3.4=1.2×3.8=9.6×4.1=7.8×1.6=3.5×1.6=4.4×1.4=2.9×2.1=3.5×1.2=4.8×3.4=6.9×2.5=2.5×7.8=8×5.4=6.9×2.5=2×3.5=6.8×2.2=4.7×5.4=4.1×8.8=2.2×5.5=9.6×2.1=1.7×3.8=7.4×3.6=0.8×0.23=1.6×2.4=4.7×3.5=1.2×3.6=1.5×3.8=2.8×1.2=7.3×2.7=7.3×2.7=6.2×3.7=4.2×3.9=0.54×0.65=7.5×5.2=0.7×0.5=0.32×0.47=8.3×6.3=7.2×0.42=0.48×0.52=0.8×0.25=43.5×0.65=0.32×0.16=0.35×0.55=0.87×0.8=0.24×0.08=0.92×0.37=1.4×0.6=3.6×4.2=0.72×0.48=6.8×3.2=7.1×3.4=0.42×0.66=0.32×0.68=2.8×7.2=0.65×0.19=3.09×1.2=3.25×5.64=0.25×0.47=0.82×0.18=7.8×2.4=0.45×0.18=0.4×0.16=8.2×1.8=0.73×0.27=8×3.2=9.8×4.8=3×2.4=2.8×0.9=1.29×0.18=5.1×0.8=10×0.3=8.9×4.9=6.8×0.7=8×0.72=6.6×3.4=6.4×1.3=1.2×0.8=7.3×6.2=8.7×3.6=12.3×0.7=0.8×9.2=4.7×1.9=5.1×3.9=1.4×0.6=3.8×6.4=0.6×7.45=4.9×0.1=4.5×3.2=1.8×0.9=6.5×0.5=10.5×6.5=7.5×0.5=0.78×0.28=12.8×2.8=9.6×2.3=3.8×0.12=0.8×0.08=10×7.4=7.5×3.2=0.42×0.58=0.8×0.15=2.5×0.4=8.2×2.6=1.4×0.7=2.5×4.6=0.5×9.8=6.7×2.6=7.2×5.9=8.7×3.6=5.69×2.48=2.9×4.1=9.1×6.7=2.03×1.2=8.6×4.9=1.3×2.03=9.46×7.21=1.56×2.24=3.5×1.25=0.75×0.4=20×0.78=4.8×4.2=5.7×3=4.9×1.7=1.34×0.8=2×0.75=8.7×0.03=0.2×0.09=8.5×2.5=3.4×1.4=0.68×0.42=7.82×7.2=2×9.1=0.48×0.52=8.1×5.1=0.78×0.24=0.8×0.18=0.89×0.25=1×0.98=0.9×0.1=1×0.8=4.5×4=5.6×4=5.7×3.3=10×4.4=6×6.6=9.5×2.7=1×0.55=四年级小数加减混合运算题25.6-(0.23+5.6)-1.7713.75-(4.75+6.48)7.83+2.34-0.83+6.663.82+2.9+0.18+9.125.48-((9.4-0.52)35.6-1.8-15.6-7.25.93+0.19+2.817.3+2.7-7.3+2.748.4+2.78+51.6-0.7823.4+0.8-13.4-7.24.8+8.63+5.2+0.373.07-0.38-1.621.27+3.9+0.73+15.15.84-1.8-3.2132.44-(58.74+19.44)7.5+4.8-6.53.25+2.76+1.7513.75-(3.75+6.48)7.14-0.53-2.4713.45-4.68+2.5547.8-7.45+8.236.8-4.5+6.9849.8-9.6+8.815.2-6.8-3.451.76+0.65+3.240.134+2.66+0.87.5+4.9-6.33.45+1