\(\frac{3}{9}+\frac{9}{15}+\frac{8}{12}=\frac{8}{5}\)
Ai tích mk mk tích lại cho
3/9 + 9/15 + 8/12 = 60/180 + 108/180 + 120/180 =288/180
3/9 + 9/15 + 8/12 = 14/15 + 8/12
= 8/5
Vậy 3/9 + 9/15 + 8/12 = 8/5
\(\frac{3}{9}+\frac{9}{15}+\frac{8}{12}=\frac{8}{5}\)
Ai tích mk mk tích lại cho
3/9 + 9/15 + 8/12 = 60/180 + 108/180 + 120/180 =288/180
3/9 + 9/15 + 8/12 = 14/15 + 8/12
= 8/5
Vậy 3/9 + 9/15 + 8/12 = 8/5
Điền dấu >,<,= vào chỗ chấm:
A]11/15.........13/15
B]8/11.......8/9
C]3/4......5/9
D]15/15..........12/12
rút gọn rồi tính
a.3/9 + 9/15 + 8/12
b. 4/10 + 12/32 + 9/15
c. (4/10 - 8/30) x 6/8
Rút gọn rồi tính
a,3/9+9/15+8/12
b,4/10+12/32+9/15
{ < , >, = }
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:
3/8 + 5/4 = ........................
3/15 x 9 = .........................
9/12 - 2/3 = ......................
5/6 : 2/3 = .......................
Bài 1:Tính
a) 11/4 - 9/8 + 15/12 b) 6/7 x 21/12 + 5/3
c) 13/18 : 5/9 -1 d) 3 + 9/4 : 3/5
Điền dấu <>=?
5/6+3/4...19/11
17/12-9/8...1/3
4/9*6/5...8/15
15/4:3/8...8
Bài 12. Tính a) 7/12 + 3/4 x 2/9 b) 8/9-4/15:2/5 c) (7/9+5/6)x3/5
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=?