Tính:3/7 + 4 .............................................5/9 x 3 .............................................7/8 - 2/9 ..........................................5 - 3/4 .............................................5/7 : 6 .............................................5/6 x 2/7 .........................................3 + 3/4 ...........................................3/5 x 4/8 ........................................5 : 3/8 ............................................3 x 5/9 ............
Đọc tiếp
Tính:
3/7 + 4 = .............................................
5/9 x 3 = .............................................
7/8 - 2/9 = ..........................................
5 - 3/4 = .............................................
5/7 : 6 = .............................................
5/6 x 2/7 = .........................................
3 + 3/4 = ...........................................
3/5 x 4/8 = ........................................
5 : 3/8 = ............................................
3 x 5/9 = ...........................................