解比例:

六年级数学下册解方程专项练习题：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=: 2.8:4.2=x:9.6

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 =

X = 4x-3 9 = 29 x + x = 4

X-21=4 6X+5 =13.4 X-X= 4-6=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=125 X-2.45=8

0.365- 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= 4-6=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-2.45=8 0.365- 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= 4-6=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-2.45=8

0.365- x = (x- 4.5) = 7 x- 25%x = 10

x- 0.8x = 16+6 20 x 8.5= 1.5 x- x -4= 21

计算下面各题，能简算的要简算.

3 5 4

(+ ) 5 (+)27 6 ()

(- ) (7 - ) +

+ - 6 - 6

21 37 24 (+ 7 ) 25 + -

1- + (5 - )

12(+ + ) (125 34) (+ )7 5

199 (24 + ) 78

+ 0.4-25