五年级下册 分数的意义和性质（笔算）

57 = ( )42 30	57 = ( )42 30	35 = ( )35 21
2045 = 49	1848 = 38	37 = ( )21 9
3054 = 59	14 = ( )36 9	13 = ( )15 5
15 = ( )15 3	812 = 23	1220 = 35
39 = ( )54 18	1830 = 35	24 = ( )12 6
1827 = 23	2040 = 12	23 = ( )15 10
35 = ( )40 24	13 = ( )33 11	13 = ( )18 6
79 = ( )45 35	26 = ( )30 10	58 = ( )24 15
12 = ( )18 9	48 = 12	23 = ( )12 8
4248 = 78	4248 = 78	78 = ( )48 42
13 = ( )15 5	12 = ( )10 5	12 = ( )12 6
1224 = 12	23 = ( )21 14	15 = ( )35 7
618 = 13	23 = ( )30 20	69 = 23
3040 = 34	28 = ( )24 6	530 = 16
25 = ( )45 18	23 = ( )15 10	410 = 25
23 = ( )9 6	1227 = 49	17 = ( )21 3
35 = ( )30 18	13 = ( )33 11

57 = 3042	57 = 3042	35 = 2135
2045 = 49	1848 = 38	37 = 921
3054 = 59	14 = 936	13 = 515
15 = 315	812 = 23	1220 = 35
39 = 1854	1830 = 35	24 = 612
1827 = 23	2040 = 12	23 = 1015
35 = 2440	13 = 1133	13 = 618
79 = 3545	26 = 1030	58 = 1524
12 = 918	48 = 12	23 = 812
4248 = 78	4248 = 78	78 = 4248
13 = 515	12 = 510	12 = 612
1224 = 12	23 = 1421	15 = 735
618 = 13	23 = 2030	69 = 23
3040 = 34	28 = 624	530 = 16
25 = 1845	23 = 1015	410 = 25
23 = 69	1227 = 49	17 = 321
35 = 1830	13 = 1133