五年级下册 分数的意义和性质（笔算）

45 = ( )30 24	17 = ( )42 6	23 = ( )15 10
19 = ( )36 4	13 = ( )24 8	12 = ( )6 3
17 = ( )21 3	315 = 15	1224 = 12
16 = ( )36 6	13 = ( )30 10	12 = ( )18 9
13 = ( )30 10	12 = ( )10 5	610 = 35
12 = ( )4 2	13 = ( )9 3	14 = ( )16 4
2428 = 67	627 = 29	39 = ( )18 6
25 = ( )40 16	13 = ( )21 7	1520 = 34
3642 = 67	24 = ( )28 14	24 = ( )20 10
1416 = 78	35 = ( )45 27	69 = ( )36 24
216 = 18	23 = ( )12 8	23 = ( )24 16
78 = ( )48 42	13 = ( )12 4	12 = ( )8 4
13 = ( )33 11	15 = ( )40 8	23 = ( )30 20
810 = 45	624 = 14	45 = ( )30 24
13 = ( )12 4	3540 = 78	1224 = 12
69 = ( )36 24	26 = ( )18 6	14 = ( )20 5
37 = ( )35 15	68 = ( )72 54

45 = 2430	17 = 642	23 = 1015
19 = 436	13 = 824	12 = 36
17 = 321	315 = 15	1224 = 12
16 = 636	13 = 1030	12 = 918
13 = 1030	12 = 510	610 = 35
12 = 24	13 = 39	14 = 416
2428 = 67	627 = 29	39 = 618
25 = 1640	13 = 721	1520 = 34
3642 = 67	24 = 1428	24 = 1020
1416 = 78	35 = 2745	69 = 2436
216 = 18	23 = 812	23 = 1624
78 = 4248	13 = 412	12 = 48
13 = 1133	15 = 840	23 = 2030
810 = 45	624 = 14	45 = 2430
13 = 412	3540 = 78	1224 = 12
69 = 2436	26 = 618	14 = 520
37 = 1535	68 = 5472