五年级数学简便运算解方程练习题.pdf

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1、小学数学五年级上册简便计算练习小学数学五年级上册简便计算练习一、请用简便方法计算下列各题一、请用简便方法计算下列各题0.250.280.1253.22.53540.20.2540.2543.59.93.599+3.53.5101-3.53.53.52.7-3.50.7(32+5.6)4.93.577.35(7.350.25)7.353.29+0.73+2.273.29-0.73-2.277.5+2.5-7.5+2.57.325-3.29-3.3257.325-(5.325+1.7)7.325-(5.325-1.7)9.9+3.50.13.50.83.50.2547(7.350.25)7.325

2、-(5.325+1.7)2.7+350.730.6-0.50.60.125 80.250.280.1253.22.53540.20.2540.2543.59.93.599+3.53.5101-3.53.53.52.7-3.50.7(32+5.6)4.93.577.35(7.350.25)7.353.29+0.73+2.273.29-0.73-2.277.5+2.5-7.5+2.57.325-3.29-3.3257.325-(5.325+1.7)7.325-(5.325-1.7)9.9+3.50.13.50.83.50.2547(7.350.25)7.325-(5.325+1.7)2.7+350

3、.730.6-0.50.60.125 8二、解方程（要注明依据）12x-8x=4.81.2x=81.6(200-x)5=30 x-0.7x=3.65.6x=33.6x+3x+10=705x+x=99.8-x=3.85x-45=1004.5x-x=28(x-140)70=4x+2x+18=78(27.5-0.5x+8=433200=450+5X+X1.5(x+1.6)=3.6155X-2X=18913.5-5x=275.6x=12.63.5)x=445x=20 x 1.3二、解方程（要注明依据）12x-8x=4.81.2x=81.6(200-x)5=30 x-0.7x=3.65.6x=33.6x

4、+3x+10=705x+x=99.8-x=3.85x-45=1004.5x-x=28(x-140)70=4x+2x+18=78(27.5-0.5x+8=433200=450+5X+X1.5(x+1.6)=3.6155X-2X=18913.5-5x=275.6x=12.63.5)x=445x=20 x 1.3简便计算(1)5.327.934.68 2.50.390.432.18.31.7 12.39(252.50.25)4 1.812.58.8 3.66.83.62.6864 1.311.25320.25 3.8(5.182.39)3.52.51.81.23.61.2212.5820.99简便计

5、算(2)4.699+4.6 7.5101-7.51.252.5（804）4.67.682.50.4 0.455.599 0.12512.50.42.58 9.54.27.8+2.24.2 0.8747+4.654-4.672+450.18+4.5721013.36+4.640.87简便计算(3)4.080.25 4900.355.2899 12.55.710.1 490.4632.5 0.50.34101 4.868.75 11-8.75 9.94.120.80.12587.62099 4.9101212 0.68101简便计算(4)3.26 5.7-3.260.7 55.699+55.61.

6、25 2130.8 6.13.6+3.63.94.7599+4.75 2.73991.22.5+0.82.5 1010.450.254.784 0.652027.28.4+2.88.4 0.78984.80.25 1.5105 0.32.50.4简便计算(5)561.25 1.25+4.6+0.75 1.67.51.25490.1258 0.4632.5 0.57.6209.6100.1 4210.2 9.80.5228.499+28.4 0.942.5-0.92.540.812.52.5 3.61010.12572 0.2539+0.25简便计算(6)3.20.82+3.21.18 1.58

7、99+1.58100.22.5 14.5102 1.253.20.2512.15-3.83+0.85-6.17 2.651.7+1.351.73.550.43.550.4 0.1250.388018.6-18.60.5 3.583.6+6.43.583.050.254 4.250.44.250.4解方程（1）20-X=9 X-1.8=4 15-X=22.1X=3 X6X-35=13 3X-12(100-3X)2=8 6X+3=9 4X-2=105X-39=56 18+5X=21 8X-47X3=8.19 43-X=38 6.37=0.3 1.6X=6.46=6 (5X-12)8=2414=0X

8、=7解方程（2）7(X-20)=140 6.7X-60.3=6.7 9X+X=04(6X+3)=60 2X+232X+1.5X=17.5 8X-3X=105 3X+X+6=263X+6=18 2X-7.5=8.5 16+8X=404X-39=29 2(X-2.6)=8 5(X+1.5)=17.58(X-6.2)=41.6 (X-3)4=134 (3X-4)2=7.5 13.2X+9X=33.35=4解方程（3）8X-3X=105 5.4X+X=12.8 X-0.36X=16X+4.8=7.2 X-6.5=3.2 X8=0.46X+18=48 3(X+2.1)=10.5 12X-9X=8.73.

9、8+X=6.3 X-7.9=2.6 2.5X=14X3=1.2 3.4X-48=26.8 2X-97=34.242X+25X=134 13(X+5)=169 5X+7=42解方程（4）X4.2=2 3.6X-X=3.25 2(X-3)=5.8X1.44=0.4 3.85+1.5X=6.1 6X-0.9=4.57.8X+2.4X=20.4 2(X+1)=6 6(X-1.5)=154X-123=100 (X-5)0.34-2X=0.2 4(X+6)=36 X-0.8X=1.26X-2X=20 0.5+7X=18 3X-63=7 X-0.28X=3.68=0解方程（5）8X+19=51 2.7X-1

10、4=21.1 X-0.38X=1.245.3X-2X=1.32 4(X+4.5)=20 5X-7.3=7.73.6X+8.5=22.9 7X+46X-12=30 45-3X=24 54-X=247X=49 1261.8 X=2 9X=927 19.4-X=73.5=24.5 5X+28=48X=42 3.5-X=2.5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 与 14 的积比 X 的 3 倍少 6。8.X 的 5 倍比 3 与 7.2 的积小 3.4。9.8X 与 3X 的差等于 27.7 与 4.8 的差。10.X 的 7 倍减去 21，差是 14。11.X 的 5 倍比 X 的 2 倍多 12。