小學(xué)數(shù)學(xué)五年級(jí)上方程100道

解方程（一）姓名：X－2.8=96x=8.4x－1.8=4x÷6=3.6x-2.72=3.8X÷2.5=0.84x+18=301.8×3+5x=15.416+8x=403.4x-6×8=26.82x－5.2=2.82x+2.8×2=10.45x＋5.5=73x＋44=656x－2.7=1.5(x－3)×9=6313(x＋5)=169(x－3)÷2=7.515×(x＋0.6)=182x＋x=3.3(2.81＋x)÷2=5.627(x－1.2)=2.14x＋6=367(x－1.2)=2.1(x－3)÷4=7.210x－2x=24x＋1.8x=22.45.4x＋x=12.8x＋2.4x=5.15.9x－2.4x=7cOm5x－1.4x=7.23.8x－2.45x=13.512x－9x=8.76x＋2.1=8.285(x－2.4)=15解方程（二）xkb1.com姓名：4x－0.4=9.40.6x＋0.4×3=4.22x＋1.9=2.54x＋1.5x=4.43.6x－1.2x=242x÷4=1.56x＋0.2×5=5.24x＋36=962(x－9.7)=34.26(x＋1.5)=13.2X－0.68x=168x÷4=169x－34=113x-1.2=2.412x－9x=8.7Om6x＋18=483(x＋2.1)=10.5x+4.8=7.22x－0.3×8=1.25x＋15=205(x＋2.3)=25.53(x－1.7)=3.62(x＋2×3)=50(x－7)÷3=122x-0.7×8=2.41.85＋x=5.630x÷2=3609×(x－3.4)=67.58x－7.2×4=40.88.4x－3.6x=45.6

（1）(0.5+x)+x=9.8÷20.5+2x=4.90.5+2x-0.5=4.9-0.52x=4.42x÷2=4.4÷2X=2.2（2）2(X+X+0.5)=9.82x+2x+1=9.84x+1-1=9.8-14x=8.84x÷4=8.8÷4X=2.2（3）25000+x=6x25000+x-x=6x-x5x=250005x÷5=25000÷5X=5000（4）3200=440+5X+X6x+440=32006x+450-450=3200-4406x=27606x÷6=2760÷6X=460（5）X-0.8X=60.2x=60.2x÷0.2=6÷0.2X=30(6)12x-8x=4.84x=4.84x÷4=4.8÷4X=1.2(7)7.5+2X=152x+7.5-7.5=15-7.52x=7.52x÷2=7.5÷2X=3.75(8)1.2x=81.61.2x÷1.2=81.6÷1.2X=68(9)x+5.6=9.4X+5.6-5.6=9.4-5.6X=3.8(10)x-0.7x=3.60.3x=3.60.3x÷0.3=3.6÷0.3X=12(11)91÷x＝1.391÷x×x=1.3×x1.3x=911.3x÷1.3=91÷1.3X=70(12)X+8.3=10.7X+8.3-8.3=10.7-8.3X=2.4(13)15x＝315x÷15=3÷15X=0.2(14)3x－8＝163x-8+8=16+83x=243x÷3=24÷3X=8(15)3x+9=273x+9-9=27-93x=183x÷3=18÷33x=6(16)18(x-2)=27018x-36=27018x-36+36=270+3618x=30618x÷18=306÷18X=17(17)12x=300-4x12x+4x=300-4x+4x16x=30016x÷16=300÷16X=18.75(18)7x+5.3=7.47x+5.3-5.3=7.4-5.37x=2.17x÷7=2.1÷7X=0.3(19)3x÷5=4.83x÷5×5=4.8×53x=243x÷3=24÷3X=8(20)30÷x+25=8530÷x+25-25=85-2530÷x=6030÷x×x=60×x30=60x60x÷60=30÷60X=0.5(21)1.4×8-2x=611.2-2x+2x=6+2x11.2=6+2x2x+6-6=11.2-62x=5.22x÷2=5.2÷2X=2.6(22)6x-12.8×3=0.066x-38.4=0.066x=38.466x÷6=38.46÷6X=6.41(23)410-3x=170410-3x+3x=170+3x170+3x=4103x+170-170=410-1703x=2403x÷3=240÷3