五年级数学简便计算练习题

1、简便计算 (1)5.32 7.93 4.682.50.39 0.432.1 8.3 1.712.39 (5.18 2.39)(25 2.5 0.25) 41.83.5 2.5 1.812.5 8.83.61.2 3.6 1.226.8 3.6 2.68 641.3112.5 821.25 32 0.253.80.99简便计算 (2)4.6 99+4.67.5101-7.51.25 2.5 （80 4）4.647+4.6 54-4.67.68 2.5 0.40.4572+45 0.18+4.55.5 990.1257212.5 0.4 2.5 89.51014.2 7.8+2.2 4.20.87

2、3.36+4.64 0.87简便计算 (3)4.08 0.254900.355.28 9912.54.12 0.85.7 10.1490.125 80.4 63 2.50.57.6 200.34 1014.86994.91018.75 11-8.759.92120.68 101简便计算 (4)3.26 5.7-3.26 0.755.699+55.61.25 213 0.86.13.6+3.6 3.94.75 99+4.752.73991.2 2.5+0.8 2.51010.450.25 4.78 40.652027.2 8.4+2.8 8.40.78984.8 0.251.51050.3 2.

3、5 0.4简便计算 (5)56 1.251.25+4.6+0.751.67.5 1.2549 0.125 80.4 63 2.50.5 7.6 209.6 100.14210.29.80.5 228.4 99+28.40.942.5-0.9 2.540.8 12.5 2.53.61010.125 720.2539+0.25简便计算 (6)3.2 0.82+3.2 1.181.5899+1.5810 0.2 2.514.51021.253.2 0.2512.15-3.83+0.85-6.172.651.7+1.35 1.73.55 0.4 3.55 0.40.1250.38 8018.6-18.

4、6 0.53.583.6+6.4 3.583.05 0.25 44.25 0.4 4.25 0.4解方程（ 1）20-X=9X-1.8=415-X=22.1 X=3X7=0.31.6X=6.46X-35=133X-126=6(5X-12)8=24(100-3X)2=86X+3=94X-2=105X-39=5618+5X=218X-414=07X3=8.1943-X=386.3X=7解方程（ 2）7(X-20)=1406.7X-60.3=6.79X+X=04(6X+3)=602X+234=134(3X-4)5=42X+1.5X=17.58X-3X=1053X+X+6=263X+6=182X-7.

5、5=8.516+8X=404X-3 9=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（ 3）8X-3X=1055.4X+X=12.8X-0.36X=16X+4.8=7.2X-6.5=3.2X8=0.46X+18=483(X+2.1)=10.512X-9X=8.73.8+X=6.3X-7.9=2.62.5X=14X3=1.23.4X-48=26.82X-97=34.242X+25X=13413(X+5)=1695X+7=42解方程（ 4）X4.2=23.6X-X=3.252(X-3)=5.8X1.44=0.43.

6、85+1.5X=6.16X-0.9=4.57.8X+2.4X=20.42(X+1)=66(X-1.5)=154X-12 3=100(X-5)3=7X-0.28X=3.60.3 4-2X=0.24(X+6)=36X-0.8X=1.26X-2X=200.5+7X=183X-68=0解方程（ 5）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+43.5=24.55X+28=486X-12=3045-3X=2454-X=247X=49126X=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.X的 9 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 4.7 。6.X除以 12 等于 4。7.0.3