解比例练习
一、 解比例
25 :7=X :35 514 :35= 57 :x 23 :X= 12: 14
X :15=13 :56 34 :X= 54 :2 X :0.75 = 81 :25
3.2X1113654::x =
1.54254x3
11123x:10=: 0.4:x=1.2:2 =
432.4x
1113:=:x 0.8:4=x:8 :x=3:12 2544
1112.8:4.2=x:9.6 :x=: 1.25:0.25=x:1.6
1084
20061111134446× 2008×2007 13 -13 ×33 45 7725×101- 64.2×87+0.642×1300 25÷100252526
351312.42÷+4.58×1-4÷3 4.25-3-(2-1)
34664
3233.8÷3.9+3.9÷0.1+0.1÷3.9 ×+×0.6
454
1
二、根据下面的条件列出比例,并且解比例 1. 96和X的比等于16和5的比。 2. 45 和X的比等于25和8的比。
3. 两个外项是24和18,两个内项是X和36 。
二、 解比例
25=1.275
18:110=14:
x:10=14:13 0.4:x=1.2:2
12:115=4:x 0.8:4=x:8
1.25:0.25=x:1.6
x: 23=6: 2425
2.8:4.2=x:9.6
8:x=435:4
6∶x=1∶153
34∶12=x∶45
25:=14:4 6.50.8:23=:6
29=8x 4.5x=62.2 45:x=18:26
110:x=18:14 x:24= 5118:6=x: 12 0.61.512=x
1112∶45=2536∶x :=3.25:4 27:=15:59 1232.4=x
34:x=3:12 36x=543
34:13 0.6∶4=2.4∶x x∶1114=0.7∶2 2
10∶50=x∶40 1.3∶x=5.2∶20 x∶3.6=6∶18
11164.683x∶=∶x = = 32090.2x864解方程
2233X- X= 2X + = 70%X + 20%X = 3.6 74
X×35=20×14 25% + 10X =
X+38X=121 5X
6X+5 =13.4
X÷277=16 X 35 X = 2572
4x-3 ×9 = 29 310X-21×23=4
6X+5 =13.4
5X=
1519 23X÷14=12
5545 X - 15%X = 68
-3×5521=7 34X1348 3X=+78X=34 4X819 X = 6×1651 X112x + 6x = 4
x14x20 25 X-13 X=3
10 48421X=15 X35X=2572 23X÷14=12
38
-6×23=2
÷ 6261335=45×25 2(x2.6)8 χ-6=38
÷45=1528 819X=6×1651 3
X÷
4+0.7X=102 211X+X=42 X+X=105 131X626=÷ X-0.25= =30%
25443545
X-38X=400 X-0.125X=8
X+37 X=18 X
x×2133+2=4×8
0.36×5- 34 x = 35
x- 0.8x = 16+6 20 x
X+25%X=90 X
2X + 235 = 5 70%X + 20%X = 3.6 X
25% + 10X = 45 X - 15%X = 68 X 5X-3×
5521=7 32×( 16 + 38 )=1312 x-37X=12 23 (x- 4.5) = 7 – 8.5= 1.5 -37 X= 89 X23X÷14=12 6X436X = 34 -0.375x=56 -2.4×5=8
1
2 x- 25%x = 10
x- 4
5 x -4= 21 - 27 X=34
×315=20×
4+38X=121
+5 =13.4
4
X 5 X
313X 3X=3 X÷2=7 4488716
123732X+X= 4X-6×=2 ÷X=
84
3255 X = 72
4x-3 ×9 = 29
x14x20
25 X-133 X=10 4
8421X=15 X 3255X=72
X-0.25=14 213X+2X=42 X+
389 X = 16×165112x + 16x = 4 2(x2.6)8 6Xχ-6=38 5X=÷45=1528 89X=1166×51 XX4=30% 4+0.7X=102
14X=105 X-510÷ 6261335=45×25 310X-21×23=4
+5 =13.4
1519 23X÷14=12
÷61335=2645÷25 38X=400 5
X
X-0.125X=8
13135213X×( + )= x-0.375x= x×+=4×
3336 = X+ X=18
74X6812
X-37X=12 5
23 (x- 4.5) = 7
x- 0.8x = 16+6 20 x
X-37 X= 89
70%X + 20%X = 3.6
X - 15%X = 68
34X1438 3X=
4X-6×23=2
X÷
635=2645×1325 4
6X-2.4×5=8 0.361
2 x- 25%x = 10 X– 8.5= 1.5 x- X- 237 X=4 2X + X×315=20×4 25% + 10X = X+38X=121 5X38 X÷27=7161235 ÷X=10 35 X = 2572 x-3 ×9 = 29 328×5- 334 x = 5
+25%X=90 4
5 x -4= 21
25 = 35 45
-3×5521=7 +78X=34 81169 X = 6×51
12x + 16x = 4
6
X
321X-21×=4 xx20 2(x2.6)8 1034
213
6X+5 =13.4 X- X= 4χ-6=38
5310 5X=
1544158 X= X÷= 19 23X÷14=12
X÷6261335=45÷25 X-0.25=
4+0.7X=102
X-38X=400 X-0.125X=8
X+37 X=18 X
x×23+12=4×38
0.36×5- 334 x = 5
x- 0.8x = 16+6 20 x
211535X=2572 14 23X+12X=42 X+×( 13136 + 8 )=12 x-37X=12 23 (x- 4.5) = 7 – 8.5= 1.5 52881169X=6×51 X4=30%
14X=105
36X = 34
-0.375x=565 X-2.4×5=8
1
2 x- 25%x = 10
x- 4
5
x -4= 21
7
X
8
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