9/11 + 1/12 : 11/24
9/11 1/12:11/24
9/11 + 1/12 : 11/24
Tính :
2/5 + 11/15 =
7/8 - 7/9 =
11/13 x 26/31 =
16/24 : 4 =
30 : 6/5 =
9/16 : 4 =
1/2 : 1/3 x 8/15 =
( 5/8 + 1/4 ) x 2/3 =
5/7 x 1/3 + 4/3 =
9/11 + 1/12 : 11/24 =
Tính bằng cách thuận tiện:
9/24 + 24/11 + 2/11 + 5/14
Tính bằng cách thuận tiện:
9/24 + 24/11 + 2/11 + 5/14
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
a) 6/11 : 3/11 = …
b) 14/5 : 7/10 = …
c) 3 : 7/4 = …
d) 24 : 48/9 = …