小学四年级下册数学小数乘法练习.doc

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1、小学四年级上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=50.8×100=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=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=0.3

2、9×0.6=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.比较大小1.2.03×15+2.052.03×162.30.7×1130.7×103.5.56×125.56×11+5.564.12.7×1312.7×115.12.03×0.1212.03×0.116.15.3×0.2215.3×0.27.

3、0.66×0.50.13×0.58.0.15×120.15×1.2一、直接写得数 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×

4、7.8＋5.5×7.83、脱式计算，能简便的要简便计算。 2.8+7.2×0.81           0.34×2.5×0.4             1.25×11×4×0.8      8.93×5.7＋8.93×3.3＋8.93             4.82×102                0.7×0.46+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，1

5、2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

6、.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

7、×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.