(完整版)四年級(jí)運(yùn)算定律與簡(jiǎn)便計(jì)算練習(xí)題大全

十二)1.9.31—1.125—7.8752.()x183.640+128x458.2x1.6—0.336-4.2(6.400乘以0.62與0.08的和，積是多少？一個(gè)數(shù)的2.5倍等于37與8的和，求這個(gè)數(shù)。(方程解)1)3X-(1/2+1/4)=7/123X=7/12+3/43X=4/3X=4/96.6-5X=3/4-4X0.75=-4X+5XX=5.851.1X+2.2=5.5-3.3X1.1X+3.3X=5.5-2.24.4X=3.3X=3/4=4/3還有(0.5+x)+x=9.8-22(X+X+0.5)=9.825000+x=6x3200=450+5X+XX-0.8X=612x-8x=4.87.5*2X=151.2x=81.6x+5.6=9.452—x=1591-x=1.3X+8.3=10.715x=33x—8=167(x-2)=2x+33x+9=2718(x-2)=27012x=300-4x7x+5.3=7.43x-5=4.830一x+25=851.4x8-2x=66x-12.8x3=0.06410-3x=1703(x+0.5)=210.5x+8=436x-3x=181.5x+18=3x5x3-x—2=80.273一x=0.351.8x=0.972x-0.756=909x-40=5x-5+9=2148-27+5x=3110.5+x+21=56x+2x+18=78(200-x)-5=30(x-140)-70=40.1(x+6)=3.3x0.44(x-5.6)=1.67(6.5+x)=87.5(27.5-3.5)-x=4x+19.8=25.85.6x=33.69.8-x=3.875.6一x=12.65x+12.5=32.35(x+8)=102x+3x+10=703(x+3)=50-x+35x+15=603.5-5x=20.3x7+4x=12.5x-1.5-1.25=0.754x-1.3x6=2.620-9x=1.2x6.256x+12.8=15.8150x2+3x=6902x-20=43x+6=182(2.8+x)=10.4(x-3)-2=7.513.2x+9x=33.33x=x+100x+4.8=7.26x+18=483(x+2.1)=10.512x-9x=8.713(x+5)=1692x-97=34.23.4x-48=26.842x+25x=1341.5(x+1.6)=3.62(x-3)=5.865x+7=429x+4x2.5=914.2x+2.5x=13410.5x+6.5x=5189x-43x=9.25x-45=1001.2x-0.5x=6.323.4=2x=564x-x=48.64.5x-x=28X-5.7=2.15155X-2X=183X+0.7=53.5x2=4.2+x26x1.5=2x+100.5xl6—16x0.2=4x139.25—X=0.40316.9一X=0.3X-0.5=2.6x+13=333—5x=801.8+6x=546.7x—60.3=6.79+4x=402x+8=16x/5=10x+7x=89x-3x=66x-8=45x+x=9x-8=6x4/5x=202x-6=127x+7=146x-6=05x+6=112x-8=101/2x-8=4x-5/6=73x+7=283x-7=269x-x=1624x+x=506/7x-8=43x-8=306x+6=123x-3=15x-3x=42x+16=195x+8=1914-6x=815+6x=278x=47x+8=152x=14+5x=9x=88x+9=179+6x=14x+9x=4+72x+9=178-4x=66x-7=127x-9=8x-56=18-7x=1x-30=126x-21=216x-3=69x=184x-18=135x+9=112x=11x+4+8=237x-12=8X-5.7=2.15155X-2X=183X0.7=53.5x2=4.2x26x1.5=2x0.5x16-16x0.2=4x9.25—X=0.40316.9一X=0.3X-0.5=2.63—5x=801.8-6x=546.7x—60.3=6.79+4x=400.2x—0.4+0.5=3.79.4x—0.4x=16.212—4x=201/3x+5/6x=1.412x+34x=118x—14x=1223x—5x14=1412+34x=5622—14x=1223x-14x=14x+14x=6523x=14x+1430x12x—14x=1x-0.7x=3.63/7x49/9-4/38/9x15/36+1/2712x5/6一2/9x38x5/4+1/46-3/8一3/8一64/7x5/9+3/7x5/95/2-(3/2+4/5)7/8+(1/8+1/9)9x5/6+5/63/4x8/9-1/37x5/49+3/146x(1/2+2/3)8x4/5+8x11/531x5/6一5/69/7-(2/7一10/21)5/9x18一14x2/74/5x25/16+2/3x3/414x8/7一5/6x12/1517/32-3/4x9/243x2/9+1/321.5/7x3/25+3/73/14xx2/3+1/61/5x2/3+5/69/22+1/11-1/25/3x11/5+4/345x2/3+1/3x157/19+12/19x5/61/4+3/4-2/38/7x21/16+1/2101x1/5一1/5x2117/32一3/4x9/243x2/9+1/35/7x3/25+3/73/14xx2/3+1/61/5x2/3+5/69/22+1/11-1/25/3x11/5+4/345x2/3+1/3x157/19+12/19x5/61/4+3/4-2/38/7x21/16+1/2101x1/5一1/5x213/7x49/9-4/38/9x15/36+1/2712x5/6一2/9x38x5/4+1/46-3/8一3/8一64/7x5/9+3/7x5/95/2-(3/2+4/5)7/8+(1/8+1/9)9x5/6+5/63/4x8/9-1/3x5/49+3/146x(1/2+2/3)x4/5+8x11/531x5/6一5/69/7-(2/7一10/21)5/9x18一14x2/74/5x25/16+2/3x3/414x8/7一5/6x12/1517/32一3/4x9/243x2/9+1/35/7x3/25+3/73/14xx2/3+1/61/5x2/3+5/65/3x11/5+4/345x2/3+1/3x157/19+12/19x5/61/4+3/4-2/38/7x21/16+1/2101x1/5一1/5x225*3+125*5+25*3+252.9999*3+101*11*(101-92)(23/4-3/4)*(3*6+2)3/7x49/9-4/38/9x15/36+1/2712x5/6一2/9x38x5/4+1/46-3/8一3/8一64/7x5/9+3/7x5/95/2-(3/2+4/5)7/8+(1/8+1/9)9x5/6+5/63/4x8/9-1/37x5/49+3/146x(1/2+2/3)8x4/5+8x11/531x5/6一5/69/7-(2/7一10/21)5/9x18一14x2/74/5x25/16+2/3x3/414x8/