五年级下册 分数的意义和性质（笔算）

67 = ( )21 18	12 = ( )18 9	78 = ( )24 21
618 = 13	45 = ( )20 16	12 = ( )6 3
23 = ( )21 14	12 = ( )10 5	19 = ( )45 5
24 = ( )28 14	12 = ( )6 3	1015 = 23
39 = ( )45 15	67 = ( )14 12	23 = ( )21 14
1218 = 23	67 = ( )35 30	23 = ( )33 22
1830 = 35	810 = 45	89 = ( )45 40
68 = 34	1521 = 57	13 = ( )24 8
654 = 19	57 = ( )42 30	1824 = 34
34 = ( )12 9	816 = 12	424 = 16
35 = ( )40 24	14 = ( )28 7	1418 = 79
612 = 12	12 = ( )4 2	45 = ( )25 20
45 = ( )10 8	14 = ( )20 5	414 = 27
1035 = 27	78 = ( )32 28	24 = ( )12 6
12 = ( )6 3	2032 = 58	12 = ( )18 9
24 = ( )8 4	1216 = 34	27 = ( )35 10
1521 = 57	616 = 38

67 = 1821	12 = 918	78 = 2124
618 = 13	45 = 1620	12 = 36
23 = 1421	12 = 510	19 = 545
24 = 1428	12 = 36	1015 = 23
39 = 1545	67 = 1214	23 = 1421
1218 = 23	67 = 3035	23 = 2233
1830 = 35	810 = 45	89 = 4045
68 = 34	1521 = 57	13 = 824
654 = 19	57 = 3042	1824 = 34
34 = 912	816 = 12	424 = 16
35 = 2440	14 = 728	1418 = 79
612 = 12	12 = 24	45 = 2025
45 = 810	14 = 520	414 = 27
1035 = 27	78 = 2832	24 = 612
12 = 36	2032 = 58	12 = 918
24 = 48	1216 = 34	27 = 1035
1521 = 57	616 = 38