小学四年级下册数学小数乘法练习4.docx

1、小学四年级下册数学小数乘法练习4小学四年级下册数学小数乘法练习题1、直接写得数3.82= 100.7= 13.90= 508100= 5.51= 1.80.5= 3.23= 13.10.3=0.081.25= 2.54= 2.58= 0.50.2=0.60.1= 0.70.8= 2.580= 1250.8=2、竖式计算2.80.7= 130.15= 0.390.6= 0.38600=7.052.4= 0.467.9= 89.37.6= 60.5400=3、混合运算12.58.28 0.231.40.238.6 0.125（800.8）0.40.162.5 5.6101 7.85991.1599

2、1.15 16.210116.2 4.57.85.57.8四、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3.82= 100.7= 13.90= 508100= 5.51= 1.80.5= 3.23= 13.10.3=0.081.25= 2.54= 2.58= 0.50.2=0.60.1= 0.70.8= 2.580= 1250.8=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1.80.991.81.80.990.998.51.20.8

3、5124、0.75表示()。5、8b，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45.53.6=163.8写出两个积为16.38的乘法算式，。45.53600.4553608、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、0.1256.38可以用分配律简便计算。()2、4.320.4的积的小数位数一定是两位。()3、4.251.8-1.8=4.250()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

4、在括号里)1、12.598=9(12.58)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、7.610.1=（）A、7.610+0.1B、7.610+7.60.1C、7.610+7.613、不用计算，下面（）的积最大。A、0.780B、0.70.8C、0.70.084、5.362.5的积有（）位小数。A、3B、2C、1五、竖式计算2.80.7= 130.15= 0.390.6= 0.38600=7.052.4= 0.467.9= 89.37.6= 60.5400=3.0518= 0.372.31=4.618.9= 40.54.2=混合运算12.58.28 0.231.40.238.

5、6 0.125（800.8）0.40.162.5 5.6101 7.85991.15991.15 16.210116.2 4.57.85.57.83、脱式计算，能简便的要简便计算。2.8+7.20.81 0.342.50.41.251140.88.935.78.933.38.934.821020.70.46+0.70.54六、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，

6、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3.80.12= 0.570.6= 6.40.5= 6.75.8= 9.83.8= 7.86.4= 4.62.7= 4.52.7=51.6= 30.6= 31.2= 6.77.6= 5.47.8= 2.63.6= 3.51.7=

7、 8.32.6= 1.40.7= 4.52.8= 7.42.6= 6.21.4=5.42.6= 2.31.4= 3.71.8= 4.52.3=5.21.6= 3.60.8= 0.661.4= 6.55.8= 0.720.49= 0.420.28= 0.240.19= 2.41.3= 0.720.27= 0.780.32= 0.650.04= 0.230.16= 0.290.15= 0.160.19= 41.2= 74.6= 60.37= 0.280.27= 0.750.42= 2.31.9=80.64= 2.70.8= 104.2= 7.13.9= 4.31.4= 2.61.6= 0.80.3

8、= 0.650.4= 0.910.6= 1.81.6= 4.80.5= 3.20.4=9.84.8= 128.3= 15.26.5= 20.111.1= 13.3410.32= 6.520.48= 6.35.1= 8.73.6= 14.34.3= 1.50.54= 104.2= 2.473.24=2.980.56= 5.641.78= 8.020.98= 7.13.9= 2.811.39= 12.534.67= 7.26.45= 1.653.35= 7.961.45= 601.27= 6.074.89= 50.41=0.90.5= 20.7= 1.24.3= 5.42.7= 62.9= 3.7

9、1.7= 4.20.8= 7.52.5= 2.24.3= 9.57.1= 3.51.6=5.22.8= 7.81.6= 9.64.1= 104.2= 5.12.5= 4.13.4= 1.23.8= 9.64.1= 7.81.6= 3.51.6= 4.41.4= 2.92.1=3.51.2= 4.83.4= 6.92.5= 2.57.8= 85.4= 6.92.5= 23.5= 6.82.2= 4.75.4= 4.18.8= 2.25.5= 9.62.1=1.73.8= 7.43.6= 0.80.23= 1.62.4= 4.73.5= 1.23.6= 1.53.8= 2.81.2= 7.32.7

10、= 7.32.7= 6.23.7= 4.23.9=0.540.65= 7.55.2= 0.70.5= 0.320.47= 8.36.3= 7.20.42= 0.480.52= 0.80.25= 43.50.65= 0.320.16= 0.350.55= 0.870.8=0.240.08= 0.920.37= 1.40.6= 3.64.2= 0.720.48= 6.83.2= 7.13.4= 0.420.66= 0.320.68= 2.87.2= 0.650.19= 3.091.2=3.255.64= 0.250.47= 0.820.18= 7.82.4= 0.450.18= 0.40.16=

11、8.21.8= 0.730.27= 83.2= 9.84.8= 32.4= 2.80.9=1.290.18= 5.10.8= 100.3= 8.94.9= 6.80.7= 80.72= 6.63.4= 6.41.3= 1.20.8= 7.36.2= 8.73.6= 12.30.7= 0.89.2= 4.71.9= 5.13.9= 1.40.6= 3.86.4= 0.67.45= 4.90.1= 4.53.2= 1.80.9= 6.50.5= 10.56.5=7.50.5= 0.780.28= 12.82.8= 9.62.3= 3.80.12= 0.80.08= 107.4= 7.53.2= 0

12、.420.58= 0.80.15= 2.50.4= 8.22.6=1.40.7= 2.54.6= 0.59.8= 6.72.6= 7.25.9= 8.73.6= 5.692.48= 2.94.1= 9.16.7= 2.031.2= 8.64.9= 1.32.03=9.467.21= 1.562.24= 3.51.25= 0.750.4= 200.78= 4.84.2= 5.73= 4.91.7= 1.340.8= 20.75= 8.70.03= 0.20.09= 8.52.5= 3.41.4= 0.680.42= 7.827.2= 29.1= 0.480.52= 8.15.1= 0.780.2

13、4= 0.80.18= 0.890.25= 10.98= 0.90.1= 10.8= 4.54= 5.64= 5.73.3= 104.4= 66.6= 9.52.7= 10.55= 四年级小数加减混合运算题25.6-(0.23+5.6)-1.77 13.75-(4.75+6.48) 7.83+2.34-0.83+6.663.82+2.9+0.18+9.1 25.48-(9.4-0.52) 35.6-1.8-15.6-7.25.93+0.19+2.81 7.3+2.7-7.3+2.7 48.4+2.78+51.6-0.7823.4+0.8-13.4-7.2 4.8+8.63+5.2+0.37 3

14、.07-0.38-1.621.27+3.9+0.73+15.1 5.84-1.8-3.2 132.44-(58.74+19.44)7.5+4.8-6.5 3.25+2.76+1.75 13.75-(3.75+6.48)7.14-0.53-2.47 13.45-4.68+2.55 47.8-7.45+8.236.8-4.5+6.98 49.8-9.6+8.8 15.2-6.8-3.45 1.76+0.65+3.24 0.134+2.66+0.8 7.5+4.9-6.3 3.45+1.79+0.65 4.85+8.63+0.37 1.76+3.44+0.35 36.54-1.76-8.66 8-2.45-1.02 23.4+3.4-0.236.02+3.6+1.98 3.07-0.38-1.62 7.5+4.9-6.536.8-3.9-6.88 3.285+1.79+0.59 23.4-0.8+13.4 32+4.9-8.6 1.29+3.7+2.71 5.93+0.49+2.06 9-2.45-1.65 21+0.56+11.3 64.89-7.88-13.6