五年级下册 分数的意义和性质（笔算）

2028 = 57	78 = ( )48 42	89 = ( )18 16
23 = ( )12 8	1015 = 23	23 = ( )15 10
12 = ( )6 3	3035 = 67	13 = ( )15 5
13 = ( )15 5	26 = 13	34 = ( )28 21
39 = ( )45 15	59 = ( )45 25	38 = ( )72 27
1224 = 12	912 = 34	810 = 45
16 = ( )18 3	67 = ( )63 54	836 = 29
59 = ( )45 25	35 = ( )35 21	23 = ( )30 20
34 = ( )16 12	12 = ( )10 5	23 = ( )12 8
34 = ( )12 9	12 = ( )6 3	12 = ( )10 5
324 = 18	1524 = 58	1824 = 34
26 = ( )24 8	2442 = 47	12 = ( )6 3
45 = ( )45 36	46 = ( )36 24	28 = ( )24 6
23 = ( )21 14	836 = 29	612 = 12
25 = ( )30 12	12 = ( )6 3	13 = ( )12 4
12 = ( )10 5	2540 = 58	424 = 16
25 = ( )40 16	12 = ( )12 6

2028 = 57	78 = 4248	89 = 1618
23 = 812	1015 = 23	23 = 1015
12 = 36	3035 = 67	13 = 515
13 = 515	26 = 13	34 = 2128
39 = 1545	59 = 2545	38 = 2772
1224 = 12	912 = 34	810 = 45
16 = 318	67 = 5463	836 = 29
59 = 2545	35 = 2135	23 = 2030
34 = 1216	12 = 510	23 = 812
34 = 912	12 = 36	12 = 510
324 = 18	1524 = 58	1824 = 34
26 = 824	2442 = 47	12 = 36
45 = 3645	46 = 2436	28 = 624
23 = 1421	836 = 29	612 = 12
25 = 1230	12 = 36	13 = 412
12 = 510	2540 = 58	424 = 16
25 = 1640	12 = 612