Question

Tính :

1/3 + 3/4 + 1/2 =

6/8 + 2/4 + 6/24 =

1/2 + 1/3 + 5/6 =

3/5 + 3/2 + 2 =

Answer 1

\(\dfrac{1}{3}+\dfrac{3}{4}+\dfrac{1}{2}=\dfrac{4}{12}+\dfrac{9}{12}+\dfrac{6}{12}=\dfrac{19}{12}\)
\(\dfrac{6}{8}+\dfrac{2}{4}+\dfrac{6}{24}=\dfrac{3}{4}+\dfrac{2}{4}+\dfrac{1}{4}=\dfrac{6}{4}=\dfrac{3}{2}\)
\(\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{5}{6}=\dfrac{3}{6}+\dfrac{2}{6}+\dfrac{5}{6}=\dfrac{10}{6}=\dfrac{5}{3}\)
\(\dfrac{3}{5}+\dfrac{3}{2}+2=\dfrac{6}{10}+\dfrac{15}{10}+\dfrac{20}{10}=\dfrac{41}{10}\)

Answer 2

\(\dfrac{1}{3}+\dfrac{3}{4}+\dfrac{1}{2}=\dfrac{13}{12}+\dfrac{1}{2}=\dfrac{19}{12}\\ \dfrac{6}{8}+\dfrac{2}{4}+\dfrac{6}{24}=\dfrac{5}{4}+\dfrac{6}{24}=\dfrac{3}{2}\\ \dfrac{1}{2}+\dfrac{1}{3}+\dfrac{5}{6}=\dfrac{5}{6}+\dfrac{5}{6}=\dfrac{10}{6}\\ \dfrac{3}{5}+\dfrac{3}{2}+2=\dfrac{21}{10}+\dfrac{20}{10}=\dfrac{41}{10}\)

Answer 3

`1/3 + 3/4 +1/2`

`= 4/12 + 9/12 + 6/12`

`= (4+9+6)/12`

`= 19/12`

__

`6/8 + 2/4 + 6/24`

`= 3/4 + 2/4 + 1/4`

`=(3+2+1)/4`

`= 6/4= 3/2`

__

`1/2 + 1/3 + 5/6`

`= 3/6 + 2/6 + 5/6`

`=(3+2+5)/6`

`=10/6`

`=5/3`

__

`3/5 + 3/2+2`

`= 6/10 + 15/10 + 20/10`

`=(6+15+20)/10`

`= 41/10`

Answer 4

Tính nhanh :

1/2 + 2/4 + 3/6 + 4/8 + 5/10 + 6/12 =

1/3 + 1/4 + 1/5 + 8/10 + 20/15 + 20/30 =

Answer 5

`1/3+3/4+1/2`

`=4/12+9/12+6/12`

`=19/12`

 

`6/8+2/4+6/24`

`=3/4+2/4+1/4`

`=6/4=3/2`

 

`1/2+1/3+5/6`

`=3/6+2/6+5/6`

`=10/6=5/3`

 

`3/5+3/2+2`

`=6/10+15/10+20/10`

`=41/10`

Answer 6

`1/3 + 3/4 + 1/2 = 4/12 + 9/12 +6/12 = 19/12`

`6/8 + 2/4 + 6/24 =  18/24 + 12/24 + 6/24 = 36/24 = 3/2 `

`1/2 + 1/3 + 5/6 =3/6 + 2/6 + 5/6 = 10/6 = 5/3 `

`3/5 + 3/2 + 2 = 6/10 + 15/10 + 20/10 = 41/10`