五年级数学简便计算练习题

1、简便计算（1）1.25 32 0.253.8 0.995.32+7.93+4.682.5X0.39X0.432.1-8.3-1.712.39-(5.18+2.39)(25+2.5+0.25)X41.8X3.5+2.5X1.812.5X8.83.6X1.2+3.6X1.226.8X3.6+2.68X641.31X12.5X8X2简便计算（2）4.6 X 99+4.61.25 X2.5 X ( 80X4)4.6 X 47+4.6 X54 -4.67.68 +2.5 +0.40.45 X 72+45X0.18+4.57.5X101-7.54.27.8+2.24.20.87X 3.36+4.64 X

2、0.875.5 X 9912.5 X0.4 X2.5 X89.5 X 1010.125X72简便计算（3）4.08 X 0.25490X0.355.28X9912.5X4.12X0.85.7X10.149X0.125X80.4X63X2.50.5X7.6X200.34 X 1014.86 X994.91018.75 X 11-8.759.92120.68101简便计算(4)3.26 X 5.7-3.26 X 0.755.6 X 99+55.61.252130.86.13.6+3.63.94.7599+4.752.73991.22.5+0.82.51010.450.254.7840.652027

3、.28.4+2.88.40.78984.80.251.51050.32.50.4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+28.40.94X2.5-0.9X2.54X0.8X12.5X2.53.6X1010.125720.2539+0.25简便计算（6）X 99+1.5810 + 0.2 +2.514.5X 1021.25 X 3,2 X 0.253.2X0.82+3.2X1,181.583.05 +0.25 +44.25X 0.4

4、+4.25 X 0.4X 1.7+1.35 X 1.7X 0.38 X 8012.15-3.83+0.85-6.172.653.55X0.4+3.55X0.40.12518.6-18.6X0.53.583.6+6.43.5820-X=9解方程（1）X-1.8=415-X=22.1+X=3X+7=0.31.6X=6.46X-35=133X-12X6=6(5X-12)8=24(100-3X)+2=86X+3=94X-2=105X-39=5618+5X=218X-414=07X 3=8.1943-X=386.3X=8解方程(3)9X+X=07(X-20)=1406.7X-60.3=6.74(6X+3

5、)=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)=17.58(X-6.2)=41.6(X-3)+2=7.513.2X+9X=33.3解方程(4)8X-3X=1055.4X+X=12.8X-0.36X=16X+4.8=7.2X-6.5=3.28=0.442X+25X=13413(X+5)=1695X+7=426X+18=483(X+2.1)=10.512X-9X=8.73.8+X=6.3X-7.9=2.62.5X=14X+3=1.2

6、3.4X-48=26.82X-97=34.2解方程(5)6X-2X=200.5+7X=183X-68=0X+4.2=23.6X-X=3.252(X-3)=5.8X+1.44=0.43.85+1.5X=6.16X-0.9=4.57.8X+2.4X=20.42(X+1)=66(X-1.5)=154X-12X3=100(X-5)3=7X-0.28X=3.60.3X4-2X=0.24(X+6)=36X-0.8X=1.2解方程(6)8X+19=512.7X-14=21.1X-0.38X=1.245.3X-2X=1.324(X+4.5)=205X-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=2.51.8+X=29X=92719.4-X=7列方程并求方程的解1.X的7倍比52多25。2.X9倍减去5，等于49。3.X加上26等于54。4.X与5的积是85。5.X与2.3的差是4.