How to multiply by 9, una forma muy sencilla :)
Please try to undestand this very easy video on how to multiply by nine. Do tell your children, I am applying the method from now on! 
This is shown in Spanish, very easy to understand and good practice.
Have fun 
4 Answers
This method is widely used in the UK to teach the times tables.
Do they teach the use of an abacus for addition? It seems like a similar concept. Or a slide rule, if you could find one outside of a museum.
This method is widely used in the UK to teach the times tables.
A great way to get kids interested in Mathematics. lol
Please try to undestand this very easy video on how to multiply by nine. Do tell your children, I am applying the method from now on!
This is shown in Spanish, very easy to understand and good practice.
Have fun
Somebody had way too much time on their hands to come up with that.
