五年级下册 分数的意义和性质（笔算）

12 = ( )10 5	820 = 25	12 = ( )10 5
12 = ( )10 5	23 = ( )24 16	1035 = 27
12 = ( )10 5	37 = ( )21 9	921 = 37
28 = ( )32 8	68 = 34	912 = 34
17 = ( )56 8	23 = ( )6 4	47 = ( )63 36
68 = ( )16 12	2045 = 49	23 = ( )24 16
39 = ( )54 18	23 = ( )30 20	1824 = 34
34 = ( )20 15	35 = ( )45 27	39 = 13
34 = ( )20 15	13 = ( )21 7	38 = ( )32 12
78 = ( )72 63	3045 = 23	29 = ( )18 4
24 = ( )36 18	614 = 37	13 = ( )15 5
35 = ( )40 24	14 = ( )12 3	812 = 23
520 = 14	410 = 25	12 = ( )10 5
47 = ( )14 8	34 = ( )20 15	1524 = 58
3042 = 57	36 = ( )24 12	12 = ( )8 4
816 = 12	14 = ( )28 7	12 = ( )8 4
412 = 13	15 = ( )30 6

12 = 510	820 = 25	12 = 510
12 = 510	23 = 1624	1035 = 27
12 = 510	37 = 921	921 = 37
28 = 832	68 = 34	912 = 34
17 = 856	23 = 46	47 = 3663
68 = 1216	2045 = 49	23 = 1624
39 = 1854	23 = 2030	1824 = 34
34 = 1520	35 = 2745	39 = 13
34 = 1520	13 = 721	38 = 1232
78 = 6372	3045 = 23	29 = 418
24 = 1836	614 = 37	13 = 515
35 = 2440	14 = 312	812 = 23
520 = 14	410 = 25	12 = 510
47 = 814	34 = 1520	1524 = 58
3042 = 57	36 = 1224	12 = 48
816 = 12	14 = 728	12 = 48
412 = 13	15 = 630