8 : 3/4: 4/9
= 8 x 4/3 : 4/9
= 32/3 : 4/9
= 32/3 x 9/4
= 24
\(8:\dfrac{3}{4}:\dfrac{4}{9}=8:\dfrac{3}{4}\times\dfrac{4}{9}=8:\dfrac{1}{3}=8\times\dfrac{3}{1}=24\)
1+1+1+1+2+2+2+3+3+3+3+4+4+4+4+5+5+5+5+6+6+6+6+7+7+7+7+8+8+8+8+9+9+9+9+10=
1+2+3+4+5+6++7+8+9+9+8+7+6+5+4+3+2+1+1+2+3+4+5++6+7+8+9=?
a)\(\dfrac{7}{8}\)x\(\dfrac{3}{13}\)+\(\dfrac{4}{9}\)x\(\dfrac{4}{13}\)
b)\(\dfrac{6}{5}\)+\(\dfrac{7}{3}\)+\(\dfrac{8}{9}\)
c)23: \(\dfrac{5}{14}\)+\(\dfrac{6}{7}\)+\(\dfrac{4}{9}\)
d)\(4\dfrac{1}{4}\)+\(7\dfrac{3}{7}\)-\(2\dfrac{4}{17}\)
e)8-(9\(\dfrac{2}{11}\)+\(\dfrac{8}{33}\))
1+2+3+4+5+6+7+8+9+9+9+9+9+8+7+6+5+4+1+23+3=?
Sap xep cac phan so sau theo thu tu tu lon den be
8/9; 4/5; 9/8; 3/4; 10/9; 12/12; 7/8; 1/6; 1/4; 3/2; 1/5; 8/7; 6/5; 5/6; 4/3; 6/7; 2/3; 2/15; 1/2;5/4
1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9 +1028 giúp mk nha
1+1+2+3+4+5+6+7+8++9+9+8+7+6+5+4+3+9+9+9+9+9+9+9+1+2+4+8+9+7+9+5+9+7+9+8+8+8
1+2+6+8+4+9+6+3+5+7+6+9+1+6+5+4+8++8+2+3+4
hãy ra kết quả mà không cần tính
8/9÷3/7=
8/9+2/5=
7/8-1/3=
3/10×1/6=
b.hỗn số
1 2/7+6 5/6=
5 3/4-1/5 =
6 2/9÷4 7/10=
5/3+3/2-7/6=
