五年级下册 分数的意义和性质（笔算）

39 = ( )54 18	648 = 18	12 = ( )10 5
3045 = 23	13 = ( )24 8	642 = 17
36 = ( )18 9	13 = ( )33 11	15 = ( )15 3
13 = ( )18 6	1520 = 34	24 = ( )20 10
45 = ( )10 8	13 = ( )9 3	1842 = 37
34 = ( )16 12	68 = 34	525 = 15
1236 = 13	624 = 14	1520 = 34
2025 = 45	15 = ( )35 7	610 = 35
12 = ( )8 4	12 = ( )6 3	68 = 34
15 = ( )15 3	18 = ( )16 2	69 = ( )54 36
15 = ( )20 4	26 = 13	3236 = 89
1218 = 23	515 = 13	1545 = 13
13 = ( )30 10	14 = ( )20 5	312 = 14
3642 = 67	812 = 23	2545 = 59
12 = ( )10 5	24 = ( )24 12	15 = ( )45 9
16 = ( )42 7	57 = ( )21 15	23 = ( )12 8
45 = ( )30 24	23 = ( )15 10

39 = 1854	648 = 18	12 = 510
3045 = 23	13 = 824	642 = 17
36 = 918	13 = 1133	15 = 315
13 = 618	1520 = 34	24 = 1020
45 = 810	13 = 39	1842 = 37
34 = 1216	68 = 34	525 = 15
1236 = 13	624 = 14	1520 = 34
2025 = 45	15 = 735	610 = 35
12 = 48	12 = 36	68 = 34
15 = 315	18 = 216	69 = 3654
15 = 420	26 = 13	3236 = 89
1218 = 23	515 = 13	1545 = 13
13 = 1030	14 = 520	312 = 14
3642 = 67	812 = 23	2545 = 59
12 = 510	24 = 1224	15 = 945
16 = 742	57 = 1521	23 = 812
45 = 2430	23 = 1015