小数乘除法计算题复习.doc

.小数乘法分类强化练习一、计算题（30分）1、直接写出得数。0.452.5 0.81.25 0.33.6 0.30.3 100.07 0.31.4 0.057 0.920.4 0.20.26 0.144 0.020.1 1.20.30.20.4 8.21.8 10035.22 2.342.50.4 2.45 0.224 3.2500.90.52 3.991 03.52 12.58810 = 10-1.8-7.2= 0.43+3.57= 2.5412=0.90.8= 7.5x-3x = a+3a+7a= 1.05100= 10.5= 0.963= 1.470.7= 5.46= 0.16.510= 0.56100= 3.78100= 40.8 =3.215100= 0.810= 4.08100= 1.10.2 =0.60.8 = 30.9= 2.50.4= 3.60.4=12.58= 500.04= 800.3 = 1.19= 0.165 1.782.2 = 9.60.6 = 1.20.5-0.4 = 0.70.01 = 2.50.4 = 123.9= 1.2581.25 = 6.60.66 = 5.370+4.63 = 3.92.03 4.23.51.6+2.40.3 = 2.140.92745673= 0.30.3=7.22.8 0.90.01 120.3= 2.870.7134 0.960.31.50.4 70.25 2.50.70.8= 82.5 161.6 5.61.01=8（2.50.25） 0.360.6464.3216 4.20.172.80.8 8.44.2 13.89.9 2.42.50.050.8 2.560.37 1.250.80.5 122.5 1.233 3.21.6 3.53.53 19.62 8.82.2= 0.754（1.50.25）4 0.50.8=8.40.2= 1.60.2 7.20.3= 2.80.3 0.90.15= 1.80.4= 5.50.55= 0.08100= 2.20.11= 5.464.54= 12.50.8= 0.350.3=1.45= 2.84= 19.64= 22.54=2、用竖式计算 0.3961.2= 0.7560.36= 15.613=0.1815= 0.02514= 3.0636=0.040.12 3.842.6 5.763 （保留一位小数）7.1522 90.753.3 3.680.2516.90.13 1.553.9 3.70.01613.760.8= 5.20.6 8.41.3 6.40.5 4.480.4 5.255 35.44.2 0.0420.54 0.760.32 0.250.046 2.523.4 1.0825 0.120.50.16 4.80.25 0.1251.4（保留两位小数）2.50.7= （保留三位小数） 10.13.3= （商用循环小数）10.7512.5= （用乘法验算） 3.259.04= （用除法验算） 3、脱式计算（能简算的要简算）2.57.14 16.129916.12 5.20.90.97.2899+7.28 4.3500.2 642.640.52615.715.724 (2.275 0.625)0.28 3.94+34.30.2 1.2(9.62.4)4.88.91.14.7 2.75.43.9 3.69.85-5.46 8.053.4+7.6 6.584.50.9 2.80.5+1.58324.90.9 4.84.80.5 (1.250.125)84.8100.1 56.59956.5 7.0910.80.87.094.85 + 0.35 1.4 8.7 17.4 - 8.7 7.4 12.50.42.58 0.873.16+4.64 9.5101 0.68 （5.2 -3.5） 1.25 40.5 0.81 0.18 4.8 （15 2.4） 213082576.81+6.8199 0.2518540 4.40.83.40.8 (9.37+937+937+937) 25 42.1.1.1.752.376.3+2.373.7 2.51.250.32 3.810.12.5(3.80.04) 7.69101 3.810.1 0.2539+0.25 0.12572 460.33+540.33(85.27) 1.25 6.81+6.8199 0.25185406.80.750.5 3.750.1252.75 1.53+23.47.29.599 13.50.98 12.58.8 二、解方程：54-X=24 7X=49 126X=4213+A=28.5 2.4X=26.4 7.5x3x=1851.3-2x=5.5 24x+6x=63.6 5.6x+4.4x=5.2三、列式计算1、20减去0.8的差除以4个0.3的和，商是多少？2、一个数的2.6倍加上9，和是35，求这个数。（用方程解） 3、1.2与4的积，减去6.除以5的商，差是多少？4、2.1除以35的商，加上4.与0.45的积，和是多少？5、一个数的3倍加上6与8的积，和是84，求这个数6、4.08除以0.6的商，再乘以5.，积是多少？7、甲、乙两数的积是25.2，甲数是56，乙数是多少？8、把0.47平均分成7份，每份是多少？9、1.25乘4.2减5，差是多少？10、比4.7的1.5倍多3.05的数是多少？0.430.28= 6.450.73= 4.60.6=8.90.05= 3.080.43= 1.526.7=5.2229= 18.723.6= 13.953.1=精选文档