Fractions Finale

Fractions Finale

I want to add ½ with ¼. First I change ½ to    then I add

⅓ + ⅙. ⅓ =  2/6 + ⅙ = 3/6 or 1/2

¼ + ⅛.  ¼ = 2/8 + ⅛ = 3/8

How can I change ⅔ into sixths ( 4/6)?

How can I change ⅔ into twelfths ( 8/12)

⅓ + ¼ = 7/12

⅓ +  ¼ = 7/12

⅓ + ⅕ = 8/15

⅓ +  ⅕ =8/15

⅙ + ⅛ = 7/24

⅙ + ⅛ = 7/24

⅓ + 1/7 = 10/21

¼ + ⅕ = 9/20

⅓ + ⅖ = 11/15

1/10 + 1/100 = 11/100

1/10 + 1/1000 = 101/1000