Amazing Mental Math Video

[Taraborn]

err... how is this "amazing"?

[philinmotion]

24x5:  20x5, 2x5 (then add the 0), you get 100, then 4x5 = 20, now add it to the previous total and you get 120.

455/5: 450/5, 45/5 (then add the 0), you get 90, then 5/5 = 1, now add it to the previous total and you get 91.

219/3: 210/3, 21/3 (then add the 0), you get 70, then 9/3 = 3, now add it to the previous total and you get 73.

[MrSeanMDickinson]

Pft i could do that and i'm only 3........ ok 30 but whats one "0' between friends.

Great job kid!