五上册数学期末解方程计算题专项特训

五上数学期末计算题专项特训‖解方程6.2x+x=14.4解：7.2x=14.47.2x÷7.2=14.4÷7.2x=23x-1.2=10.8解：3x-1.2+1.2=10.8+1.23x=123x÷3=12÷3x=43(x+0.2)=0.96解：3(x+0.2)÷3=0.96÷3x+0.2=0.32x+0.2-0.2=0.32-0.2x=0.1213×(x+5)=169解：13×(x+5)÷13=169÷13x+5=13x+5-5=13-5x=8(10+x)÷5.4=2.5解：(10+x)÷5.4×5.4=2.5×5.410+x-10=13.5-10x=3.57x-4.2=9.8解：7x-4.2+4.2=9.8+4.27x=147x÷7=14÷7x=2(x-3)÷2=7.5解：(x-3)÷2×2=7.5×2x-3=15x-3+3=15+3x=188(x+2.8)=50.4解：8(x+2.8)÷8=50.4÷8x+2.8=6.3x+2.8-2.8=6.3-2.8x=3.5五上数学期末计算题专项特训‖解方程5x+3x=80.24解：8x=80.248x÷8=80.24÷8x=10.033(x-2.1)=8.4解：3(x-2.1)÷3=8.4÷3x-2.1=2.8x-2.1+2.1=2.8+2.1x=4.95(x-2.3)=16.5解：5×(x-2.3)÷5=16.5÷5x-2.3=3.3x-2.3+2.3=3.3+2.3x=5.65x-0.5=8解：5x-0.5+0.5=8+0.55x=8.55x÷5=8.5÷5x=1.712x-35.4=54.6解：12x-35.4+35.4=54.6+35.412x÷12=90÷12x=7.53(x-9.9)=60.3解：3(x-9.9)÷3=60.3÷3x-9.9=20.1x-9.9+9.9=20.1+9.9x=303(x-5.6)=21.21解：3(x-5.6)÷3=21.21÷3x-5.6=7.07x-5.6+5.6=7.07+5.6x=12.676.75-x=1.68解：6.75-x+x=1.68+x1.68+x=6.751.68+x-1.68=6.75-1.68x=5.07五上数学期末计算题专项特训‖解方程2x+1.5x=21解：3.5x=213.5x÷3.5=21÷3.5x=64.3x-2.5x=0.09解：1.8x=0.091.8x÷1.8=0.09÷1.8x=0.053.2x-1.5x=0.51解：1.7x=0.511.7x÷1.7=0.51÷1.7x=0.38.4x-2.5x=17.7解：5.9x=17.75.9x÷5.9=17.7÷5.9x=32x+1.5x=24.5解：3.5x=24.53.5x÷3.5=24.5÷3.5x=72x+1.5x=23.1解：3.5x=23.1x=23.1÷3.5x=6.612.3x-7.5x=57.6解：4.8x=57.64.8x÷4.8=57.6÷4.8x=126.9x-x=18.88解：5.9x=18.885.9x÷5.9=18.88÷5.9x=3.23.8x-2.45x=13.5解：1.35x=13.51.35x÷1.35=13.5÷1.35x=1013x-7.5x=22解：5.5x=225.5x÷5.5=22÷5.5x=4五上数学期末计算题专项特训‖解方程x-0.36x=16解：0.64x=160.64x÷0.64=16÷0.64x=25(x-3)÷2=7.5解：(x-3)÷2×2=7.5×2x-3=15x-3+3=15+3x=182.4x-2.4×4=6解：2.4x-9.6=62.4x-9.6+9.6=6+9.62.4x=15.62.4x÷2.4=15.6÷2.4x=6.52x+2.9×2=10.4解：2x+5.8=10.42x+5.8-5.8=10.4-5.82x=4.62x÷2=4.6÷2x=2.34x+0.04x=12.12解：4.04x=12.124.04x÷4.04=12.12÷4.04x=3(x+12)×6=108解：(x+12)×6÷6=108÷6x+12=18x+12-12=18-12x=61.6x-43.2×0.8=45.44解：1.6x-34.56=45.441.6x-34.56+34.56=45.44+34.561.6x=801.6x÷1.6=80÷1.6x=502x-3×0.6=28.2解：2x-1.8=28.22x-1.8+1.8=28.2+1.82x=302x÷2=30÷2x=15五上数学期末计算题专项特训‖解方程5x+2x=1.4+0.07解：7x=1.477x÷7=1.47÷7x=0.211.5x+13.5=18解：1.5x+13.5-13.5=18-13.51.5x=4.51.5x÷1.5=4.5÷1.5x=3(x-8)÷2.4=12解：(x-8)÷2.4×2.4=12×2.4x-8=28.8x-8+8=28.8+8x=36.84(6x+3)=60解：4(6x+3)÷4=60÷46x+3=156x+3-3=15-36x=126x÷6=12÷6x=22x-1.8x=3.9解：0.2x=3.90.2x÷0.2=3.9÷0.2x=19.54x+11=35.4解：4x+11-11=35.4-114x=24.44x÷4=24.4÷4x