求六年级200道解比例

1460÷4= 0÷1÷124 = 124÷4 = 5×20%÷5×20%= 124 －102 =
4987794515415 = 0.375×0.625= × =
12x－ x=451 50%x－1.2×12 =1.6
（ 1245－1226.1 ）×2 ÷3 1÷（128－12 ）×17.2
1）3.2：Ⅹ=1.8：0.625
（2）Ⅹ乘以（1-37％）=5/8
（3）5/3：Ⅹ=0.25：9/4 化简比 5/7：1/4

12.78－0÷（ 13.4＋156.6 ） 12457÷〔 14578－（ 145+248 ）×13.4

16/29*12+17/29*16
936/24+15*31
（976-698)*8+71
25 -15 -80 = 10 -80 = -70
26 -6 -64 = 20 -64 = -44
27 + 3 -48 = 30 -48 = -18
28 + 12 -32 = 40 -32 = 8
29 + 21 -16 = 50 -16 = 34
30 + 30 + 0 = 60 + 0 = 60
31 + 39 + 16 = 70 + 16 = 86
32 + 48 + 32 = 80 + 32 = 112
33 + 57 + 48 = 90 + 48 = 138
34 + 66 + 64 = 100 + 64 = 164
35 + 75 + 80 = 110 + 80 = 190
36 + 84 + 96 = 120 + 96 = 216
37 + 93 + 112 = 130 + 112 = 242
38 + 102 + 128 = 140 + 128 = 268
39 + 111 + 144 = 150 + 144 = 294
40 -30 -140 = 10 -140 = -130
41 -21 -124 = 20 -124 = -104
42 -12