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解比例练习
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
=
x:10=: 0.4:x=1.2:2 =
:=:x 0.8:4=x:8 :x=3:12
2.8:4.2=x:9.6 :x=: 1.25:0.25=x:1.6
46× 2008× -×
×101- 64.2×87+0.642×1300 25÷100
2.42÷+4.58×-4÷3 4.25-3-(2-1)
3.8÷3.9+3.9÷0.1+0.1÷3.9 ×+×0.6 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 。
解比例
6.5:=3.25:4
x:10=: 0.4:x=1.2:2 =
:=:x 0.8:4=x:8 :x=3:12
1.25:0.25=x:1.6 = =
x: =6: = 45:x=18:26
2.8:4.2=x:9.6 :x=: x:24= :
8:x=: :=x: 0.6∶4=2.4∶x
6∶x=∶ =
∶=x∶ ∶=∶x x∶=0.7∶
10∶50=x∶40 1.3∶x=5.2∶20 x∶3.6=6∶18
∶=∶x = =
解方程
X- X= 2X + = 70%X + 20%X = 3.6
X×=20× 25% + 10X = X - 15%X = 68
X+X=121 5X-3×= X÷=12
6X+5 =13.4 3X=
X÷= X+X= 4X-6×=2
X = X = × X÷ =×
4x-3 ×9 = 29 x + x = 4
X-21×=4
6X+5 =13.4 X-X= 4χ-6=38
5X= X= X÷=
X÷=12 X= X=×
X÷=÷ X-0.25= =30%
4+0.7X=102 X+X=42 X+X=105
X-X=400 X-0.125X=8 =
X+X=18 X×( + )= x-0.375x=
x×+=4× X-X=12 5 X-2.4×5=8
0.36×5- x = (x- 4.5) = 7 x- 25%x = 10
x- 0.8x = 16+6 20 x– 8.5= 1.5 x- x -4= 21
X+25%X=90 X-X= X- X=
2X + = 70%X + 20%X = 3.6 X×=20×
25% + 10X = X - 15%X = 68 X+X=121
5X-3×= X÷=12 6X+5 =13.4
3X= X÷=
X+X= 4X-6×=2 ÷X=
X = X = × X÷ =×
4x-3 ×9 = 29 x + x = 4 X-21×=4
6X+5 =13.4
X-X= 4χ-6=38 5X=
X= X÷= X÷=12
X= X=× X÷=÷
X-0.25= =30% 4+0.7X=102
X+X=42 X+X=105 X-X=400
X-0.125X=8 = X+X=18
X×( + )= x-0.375x= x×+=4×
X-X=12 5 X-2.4×5=8 0.36×5- x =
(x- 4.5) = 7 x- 25%x = 10 X+25%X=90
x- 0.8x = 16+6 20 x– 8.5= 1.5 x- x -4= 21
X-X= X- X= 2X + =
70%X + 20%X = 3.6 X×=20× 25% + 10X =
X - 15%X = 68 X+X=121 5X-3×=
3X= X÷= X+X=
4X-6×=2 ÷X= X = X = ×
X÷ =× 4x-3 ×9 = 29 x + x = 4
X-21×=4
6X+5 =13.4 X-X= 4χ-6=38
5X= X= X÷=
X÷=12 X= X=×
X÷=÷ X-0.25= =30%
4+0.7X=102 X+X=42 X+X=105
X-X=400 X-0.125X=8 =
X+X=18 X×( + )= x-0.375x=
x×+=4× X-X=12 5 X-2.4×5=8
0.36×5- x = (x- 4.5) = 7 x- 25%x = 10
x- 0.8x = 16+6 20 x– 8.5= 1.5 x- x -4= 21