Saturday, January 12, 2013

Mental Math - Adding Eight!


Does this sound familiar?  This is the same as working with nine from my December 13, 2012 posting...  almost!  

Make eight into a friendly ten, then add.  When you are done, take two away.

8 + 5 =  _____
Make 8 into a friendly 10 (8+2=10), then add your 5.
10 + 5 = 15  

Take two away now!
15 - 2 =  13
The answer is 13!

WE LOVE FRIENDLY TENS!