五年级数学下册约分练习题集(一)
2436 =         6480 =          3549 =          2870 =          5795 =
2691 =         5168 =          1640 =          5481 =          7595 =
1236 =         1680 =          3248 =          3036 =          7296 =
2056 =         2560 =          3978 =          1845 =          5776 =
1536 =         7590 =          2464 =          2848 =          3075 =
3236 =         3680 =          4072 =          4270 =          4580 =
4682 =         4884 =          5075 =          5185 =          5290 =
1036 =         1260 =          1449 =          1664 =          1881 =
1248 =         1256 =          1272 =          1648 =          1890 =
2036 =         2075 =          2580 =          3075 =          2891 =
3048 =         1575 =          2575 =          3248 =          3696 =
3664 =         3451 =          3575 =          4270 =          4595 =
4669 =         4880 =          5075 =          5490 =          5696 =
6472 =         6480 =          7281 =          120144 =          144180 =