Addition 4

[blueecookie123]

great thnx i already knew this my 1st grade sis didnt know tho so gr8 help

[MrPWNSTER]

khan great videos i knew all this but its good to review thank you

[araoof]

I understand more about the different places of the number. This is awesome. Thank you very much.

[araoof]

I understand more about the different places of the number.

[Sammigmen]

This is a good way of teaching math. I like the colors

[mrbooni02]

this video is awesome

:D

[Hoopermazing]

Dohhh! I've been doing these problems as mental addition exercises.

[trainboy437]

Umm...which one comes next? I know the second set of operations you use in basic arithmetic is subtraction, but which one are you prompted to watch next?

[flame3000]

terrific for children especially my child and others who have trouble with math



[Ktayr]

I like when the writing is colorful!

[Cecelle8910]

Fantastic videos Sal. I khan now relax knowing you are there; I mean, knowing you are here. I bet you do not expect a negative comment. Well here's a small one for you.

WHY DO YOU WRITE 4 the way you do? Somethings it looks like a 9; sometimes like a 'y'. Your chalk (pointer) never crosses the horizontal line (or bar) of the figure 4. You marks for this is: 'Could Do More'. CHEERS!

PS. How do I Donate!

[Danny77uk]

Thanks for the awesome vids!

[rakurai19]

will you make videos about calculating binary numbers?

[walikai]

I hope your going to make some multiplication videos, and include different techniques to do multiplication in your head