五年级数学简便计算练习题

1、1.25X32X0.253.8X0.99简便计算(1)5.327.934.682.5X0.39X0.432.18.31.712.39(5.182.39)(252.50.25)X41.8X3.52.5X1.812.5X8.83.6X1.2+3.6X1.226.8X3.62.68X641.31X12.5X8X24.2X7.8+2.2X4.20.87X3.36+4.64X0.877.5X101-7.50.125X72简便计算(2)12.5X0.4X2.5X89.5X1014.6X99+4.61.25X2.5X（80X4）4.6X47+4.6X54 -4.67.68-2.5-0.40.45X72+45

2、X0.18+4.55.5X998.75X11-8.759.9X2120.68X1014.08X0.25简便计算(3)490X0.355.28X9912.5X4.12X0.85.7X10.149X0.125X80.4X63X2.50.5X7.6X200.34X1014.86X994.9X101X2.5X0.4简便计算(4)3.26X5.7-3.26X0.755.6X99+55.6X2.5X0.41.25X213X0.86.14.75X99+4.752.731.2X2.5+0.8X2.51010.25X4.78X40.657.2X8.4+2.8X8.40.784.8X0.251.5X1050.3X

3、3.6+3.6X3.9X99X0.45X202X980.125X720.25X39+0.25简便计算(5)56X1.251.25+4.6+0.751.6X7.5X1.2549X0.125X80.4X63X2.50.5X7.6X209.6X100.142X10.29.8-0.5-228.4X99+28.40.94X2.5-0.9X2.54X0.8X12.5X2.53.6X101简便计算(6)3.2X0.82+3.2X1.181.58X99+1.5810-0.2-2.514.5X1021.25X3.2X0.2512.15-3.83+0.85-6.17 2.65X1.7+1.35X1.7X0.38X

4、807X+3=8.1943-X=386.3+X=73.55X0.4-3.55X0.40.12518.6-18.6X0.53.58X3.6+6.4X3.583.05-0.25-44.25X0.4-4.25X0.47X+3=8.1943-X=386.3+X=7解方程(1)20-X=9X-1.8=415-X=22.1+X=3X+7=0.31.6X=6.46X-35=133X-12X6=6(5X-12)X8=247X+3=8.1943-X=386.3+X=7(100-3X)+2=86X+3=94X-2=105X-39=5618+5X=218X-4X14=08(X-6.2)=41.6(X-3)+2=7.

5、513.2X+9X=33.37(X-20)=140解方程(2)6.7X-60.3=6.79X+X=04(6X+3)=602X+23X4=134(3X-4)X5=42X+1.5X=17.58X-3X=1053X+X+6=263X+6=182X-7.5=8.516+8X=404X-3X9=292(X-2.6)=85(X+1.5)=17.5解方程（3）8X-3X=1055.4X+X=12.8X-0.36X=163.8+X=6.3X-7.9=2.62.5X=1442X+25X=13413(X+5)=1695X+7=42X+4.8=7.2 X-6.5=3.2-8=0.46X+18=483(X+2.1)=

6、10.512X-9X=8.7X+3=1.23.4X-48=26.82X-97=34.2解方程(4)3.6X-X=3.252(X-3)=5.8X-1.44=0.43.85+1.5X=6.14X-12X3=100(X-5)-3=7X-0.28X=3.67.8X+2.4X=20.42(X+1)=66(X-1.5)=150.3X4-2X=0.24(X+6)=36X-0.8X=1.26X-2X=200.5+7X=183X-6X8=0X+4.2=26X-0.9=4.51.8+X=29X=92719.4-X=7解方程（5）8X+19=512.7X-14=21.1X-0.38X=1.245.3X-2X=1.32 4(X+4.5)=20 5X-7.3=7.73.6X+8.5=22.97X+4X3.5=24.55X+28=486X-12=3045-3X=2454-X=247X=49126+X=423.5-X=2.5列方程并求方程的解1.X的7倍比52多25。49。2.X的9倍减去5，等于3.X加上26等于54。4.X与5的积是85。5.X与2.3的差