五年级小数乘除法计算题复习

1、五年级小数乘除法计算题复习 一、计算题（30分）1、直接写出得数。0.45X2.5=0.8X1.25=0.3X3.6=0.3X0.3=10X0.07=0.3X1.4=0.05X7=0.92X0.4=0.2X0.26=0.14X4=0.02X0.1=1.2X0.3=0.2X0.4=8.21.8=10035.22=2.3X4=2.5X0.4=2.4X5=0.22X4=3.25X00.90.52=3.99X1=0X3.52=12.5X88-10 =10-1.8- 7.2=0.43+3.57=2.5X4X12=0.9X0.8=7.5x3x =a+3a+7a=1.05X100=1-0.5=0.96-3=

2、1.47-0.7=5.4-6=0.16.5X10=0.56X100=3.78X100=4-0.8 =3.215X100=0.8X10=4.08X100=1.1X0.20.6X0.8=3X0.9=2.5X0.4=3.6X0.4=12.5X8=50X0.04=80X0.3=1.1X9=0.16x51.78+2.2 =9.6-0.6 =1.2x0.5-0.4 =72.8-0.8=8.4-4.2=13.8+9.9=2.4X2.50.7-0.01 =2.5x0.4 = 123.9=1.25X8-1.25 =6.6-0.66 =5.37x0+4.63 =3.9+2.03=4.23.5=1.6+2.4x0.

3、3 = 2.140.9=27+456+73=0.3X0.3=7.2+2.8=0.9-0.01=12-0.3=2.870.7=13-4=0.96-0.3=1.5x0.4=7-0.25=2.5x0.7x0.8=82.5=16-1.6=5.6X1.01=8X(2.5+0.25) =0.36+0.64=64.32-16=4.20.05X0.8=2.560.37=1.25X0.8X0.5=12X2.5=1.23X3=3.2-1.6=3.5+3.5X3=19.6-2=8.8-2.2=0.75X4=(1.5+0.25)X4=0.5X0.8=8.4X0.2=1.6X0.2=7.2X0.3=2.8X0.3=0.

4、9-0.15=1.8X0.4=5.5-0.55=0.08X100=2.2-0.11 =5.46+4.54=12.5X0.8=0.35X0.3=1.4X5=2.8X4=19.6-4=22.5X4=2、用竖式计算0.396-1.2=0.756-0.36=15.6x13=0.18x15=0.025x14=3.06x36=0.12x0.5x0.16=4.8x0.25=0.125x1.40.04x0.12=3.84x2.65.76保留一位小数）7.15x2290.75-3.33.68x0.2516.9-0.131.553.7x0.01613.76x0.8=5.2x0.68.4x1.36.4x0.54.4

5、8x0.45.25x535.4x4.20.042x0.540.76x0.320.25x0.0462.52x3.41.08x25保留两位小数）2.5-0.7=（保留三位小数）10.1+3.3=（商用循环小数）324.90.94.84.8X0.5(1.250.125)X810.75-12.5=(用乘法验算)3.25X9.04=(用除法验算)3、脱式计算(能简算的要简算)2.5X7.1X416.12X9916.125.2X0.90.97.28X99+7.284.3X50X0.2642.64X0.526X15.715.7X24(2.2750.625)X0.283.94+34.3X0.21.2X(9.6

6、-2.4)-4.88.9X1.1X4.72.7X5.4X3.93.6X9.85 -5.464.8x100.156.5x9956.57.09x10.80.8x7.09(9.37+937+937+937)x2542.x1.1.x1.758.05X3.4+7.66.58X4.5X0.92.8X0.5+1.584.8x100.156.5x9956.57.09x10.80.8x7.09(9.37+937+937+937)x2542.x1.1.x1.750.68-(5.2-3.5)x1.2540.5-0.81x0.184.8x (15-2.4)213x0 x82576.81+6.81x990.25x185

7、x404.4x0.83.4x0.84.85 + 0.35-1.48.7x17.4 -8.7x7.412.5x0.4x2.5x80.87x3.16+4.649.5x1012.37X6.3+2.37X3.72.5X1.25X0.323.8X10.16.8X0.75-0.53.75-0.1252.751.53+23.4-7.20.125X7246X0.33+54X0.336.81+6.81X990.25X185X402.5X(3.8X0.04)7.69X1013.8X10.10.25X39+0.25(8X5.27)X1.259.5x9913.5x0.9812.5x8.85x1.3-2x=5.524x+6x=63.65.6x+4.4x=5.2二、解方程：54- X=247X=49126-X=4213+A=28.52.4X=26.47.5x3x=18三、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