五年级下册 分数的意义和性质（笔算）

1242 = 27	654 = 19	58 = ( )72 45
24 = ( )20 10	38 = ( )24 9	1527 = 59
38 = ( )72 27	15 = ( )30 6	3054 = 59
648 = 18	23 = ( )33 22	24 = ( )20 10
1254 = 29	618 = 13	621 = 27
812 = 23	25 = ( )35 14	38 = ( )24 9
25 = ( )30 12	89 = ( )45 40	12 = ( )6 3
28 = ( )40 10	1218 = 23	23 = ( )24 16
34 = ( )20 15	816 = 12	13 = ( )33 11
912 = 34	13 = ( )15 5	45 = ( )30 24
816 = 12	3035 = 67	15 = ( )30 6
13 = ( )12 4	67 = ( )28 24	34 = ( )8 6
78 = ( )16 14	12 = ( )6 3	1520 = 34
616 = 38	1628 = 47	13 = ( )9 3
2540 = 58	814 = 47	1236 = 13
45 = ( )30 24	48 = ( )72 36	12 = ( )18 9
57 = ( )63 45	12 = ( )6 3

1242 = 27	654 = 19	58 = 4572
24 = 1020	38 = 924	1527 = 59
38 = 2772	15 = 630	3054 = 59
648 = 18	23 = 2233	24 = 1020
1254 = 29	618 = 13	621 = 27
812 = 23	25 = 1435	38 = 924
25 = 1230	89 = 4045	12 = 36
28 = 1040	1218 = 23	23 = 1624
34 = 1520	816 = 12	13 = 1133
912 = 34	13 = 515	45 = 2430
816 = 12	3035 = 67	15 = 630
13 = 412	67 = 2428	34 = 68
78 = 1416	12 = 36	1520 = 34
616 = 38	1628 = 47	13 = 39
2540 = 58	814 = 47	1236 = 13
45 = 2430	48 = 3672	12 = 918
57 = 4563	12 = 36