五年级下册 分数的意义和性质（笔算）

812 = 23	13 = ( )21 7	12 = ( )10 5
78 = ( )32 28	17 = ( )63 9	14 = ( )16 4
16 = ( )12 2	45 = ( )25 20	410 = 25
836 = 29	23 = ( )21 14	23 = ( )30 20
818 = 49	34 = ( )28 21	3048 = 58
47 = ( )56 32	412 = 13	34 = ( )36 27
46 = ( )30 20	45 = ( )25 20	1230 = 25
1030 = 13	37 = ( )56 24	12 = ( )10 5
14 = ( )12 3	2454 = 49	14 = ( )12 3
812 = 23	12 = ( )12 6	12 = ( )6 3
23 = ( )21 14	34 = ( )28 21	34 = ( )24 18
12 = ( )6 3	23 = ( )33 22	824 = 13
18 = ( )72 9	67 = ( )28 24	212 = 16
35 = ( )35 21	13 = ( )12 4	23 = ( )21 14
15 = ( )25 5	2427 = 89	56 = ( )30 25
14 = ( )28 7	15 = ( )40 8	812 = 23
1220 = 35	13 = ( )30 10

812 = 23	13 = 721	12 = 510
78 = 2832	17 = 963	14 = 416
16 = 212	45 = 2025	410 = 25
836 = 29	23 = 1421	23 = 2030
818 = 49	34 = 2128	3048 = 58
47 = 3256	412 = 13	34 = 2736
46 = 2030	45 = 2025	1230 = 25
1030 = 13	37 = 2456	12 = 510
14 = 312	2454 = 49	14 = 312
812 = 23	12 = 612	12 = 36
23 = 1421	34 = 2128	34 = 1824
12 = 36	23 = 2233	824 = 13
18 = 972	67 = 2428	212 = 16
35 = 2135	13 = 412	23 = 1421
15 = 525	2427 = 89	56 = 2530
14 = 728	15 = 840	812 = 23
1220 = 35	13 = 1030