2023年12月30日发(作者:数学试卷不是好卷)
五年级上册40道方程题及答案
6+x=29 x+120=196 56+x=91
解:x=29-6 解:x=196-120 解:x=91-56
x=23 x=76 x=35
12x+34x=92
解:46x=92
x=92÷46
x=2
3.6+2 x=6.3
解:2x=6.3-3.6
2x=2.7
x=2.7÷2
x=1.35
6x-3.6x=3.6
解:2.4x=3.6
x=3.6÷2.4
x=1.5
18x-14x=12
解:4x=12
x=12÷4
x=3
2.5x-5=2.5
解:2.5x=2.5+5
2.5x=7.5
x=7.5÷2.5
x=3
x+2.6=10
解:x=10-2.6
x=7.4
12+34x=46
解:34x=46-12
34x=34
x=34÷34
x=1
5x+1.4x=32
解:6.4x=32
x=32÷6.4
x=5
2x÷6=2.4
解:2x=2.4÷6
2x=0.6
x=0.6÷2
x=0.3
x+2.8=4.38 2x-0.15=6.25 3x+2=8.6
解:x=4.38-2.8 解:2x=6.25+0.15 解:3x=8.6-2
x=1.58 2x=6.4 3x=6.6
x=6.4÷2 x=6.6÷3
x=3.2 x=2.2
8x+4×2.5=42 20-4x=8
解:8x+10=42 解:20-8=4x
8x=42-10 12=4x
8x=32 4x=12
x=32÷8 x=12÷4
x=4 x=3
16.8÷(x+4)=0.3 23x=14x+14
解:16.9÷0.3=x+4 解:23x-14x=14
56=x+4 9x=14
x=56-4 x=149
x=52
89x-43x=9.2 5x-45=100
解:46x=9.2 解:5x=100+45
x=9.2÷46 5x=145
x=0.2 x=145÷5
x=29
10.5x+6.5x=51
解:17x=51
x=51÷17
x=3
133-(5+x)=80
解:133-80=5+x
53=5+x
x=53-5
x=48
1.2x-0.5x=6.3
解:0.7x=6.3
x=6.3÷0.7
x=9
83.4-2x=56 52.8-3x=48.6 x-0.7x=3.6
解:83.4-56=2x 解:52.8-48.6=3x 解:0.3x=3.6
27.4=2x 4.2=3x x=3.6÷0.3
x=27.4÷2 x=4.2÷3 x=12
x=13.7 x=1.4
26×1.5= 2x+10
解:39=2x+10
39-10=2x
29=2x
x=29÷2
x=14.5
9.25-2x=0.75
解:9.25-0.75=2x
8.5=2x
x=8.5÷2
x=4.25
52÷(x+2.62) =2.6
解:52÷2.6=x+2.62
20=x+2.62
x=20-2.62
x=17.38
4.2 x+2.5x=134
解:6.7x=134
x=134÷6.7
x=20
9.4x-0.4x=16.2
解:9x=16.2
x=16.2 ÷9
x=1.8
7x+13=33-x
解:7x+x=33-13
8x=20
x=20÷8
x=2.5
16.2÷3x=0. 3
解:16.2÷0.3=3x
54=3x
x=54÷3
x=18
2.8x-5×14=14
解:2.8x-70=14
2.8x=14+70
x=84÷2.8
x=30
130.5-5x=80
解:130.5-80=5x
50.5=5x
x=50.5÷5 x=10.1
0.5×16-16×0.2=4x 0.9×6-6x=0.6 6.7x-60.3=6.7
解:4.8=4x 解:5.4-6x=0.6 解:6.7x=6.7+60.3
4x=4.8 5.4-0.6=6x 6.7x=67
x= 4.8÷4 4.8=6x x=67÷6.7
x=1.2 6x=4.8 x=10
(x+5)÷6=1.4
解:x+5=1.4×6
x+5=8.4
x= 8.4-5
x= 3.4
x=4.8÷6
x= 0.8
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