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