I quickly dubbed this the "Take Away 10" method and was determined to try the strategy with my own family when I returned home. Because my family structure and home space are so much different ...

Taking away 9 can be a bit tricky, but 9 is only 1 away from 10, so let’s take 10 away instead. 24 take away 10 is 14. Then we have to put 1 back, because we took away 10, but we only wanted to ...