六年级求比、化简比、解方程、计算题练习。

80:24 0.5:0.2 0.15:21 36:18 13:91 3:12 1.01:101 21:24 36:72 20:40 89.5: 2 10.5:21 3.14:28.26 41.23:4123 15:0.12 10:120 123:3 65:13 3:1 42:54 、

简化比率

24:27 12:18 45:54 31:61 21:28 20:30 5:75 12:2 30:21 35:70 2:300

等式

X-2/7X=3/4

70%X + 20%X = 3.6

25% + 10X =4/5

X - 15%X = 68

X+3/8 X=121

5X-3×5/21 = 5/11

6X+5 =13.4

x \u( 6/35)=(26/45)×(13/25)

2(x-0.6)=4

(0.5+x)+x=9.8÷2

2(X+X+0.5)=9.8

25000+x=6x

3200=450+5X+X

X-0.8X=6

12x-8x=4.8

7.5*2X=15

1.2x=81.6

x+5.6=9.4

52-x =15

91÷x =1.3

X+8.3=10.7

15x =3