5/6 .... 11/12
4/7.... 3/4
10/9....10/11
{ < , >, = }
5/6......11/12 4/7.......3/4 5/8..........3/8
10/14.....5/7 10/9 .......10/11 8/15...........8/9
Tính bằng cách thuận tiện nhất
9/4 × 13/10 - 3/4 × 11/10 + 3/4 : 10/72
1/11+ 2/11+3/11+4/11+ ......+10/11 = ................
điền dấu lớn bé = vào chỗ chấm
9/8-5/6 .... 17/27-4/9
6-15/4....3/2+3/4
11/3-[5/3+2/3].....11/3-5/3-2/3
19/13+4/13-10/13....19/13-10/13+4/13
1/2+2/3+3/4+4/5+5/6+6/7+7/8+8/9+9/10+10/11+11/12+12/13+13/14+14/15=?
tính 1/11 + 2/11 + 3/11 + 4/11 +......+ 10/11 = ?
Tính 1/11 +2/11 +3/11 + 4/11 +...+ 10/11 =
bài 1
4/7+4
3+6/11
3-5/7
21/9-2
15/24+2
63/45-20/25
3/4-2/8
6/7-5/8
37/45-5/9
46/39-11/13
5/12+3/4+1/3
1/2+3/7+11/14
7/10-(1/5+1/4)
15/4-2/3-3/4