Blog Post
Ron_Katz
Community Member
I liked this. In the United States, or at least where I was raised in California, this was called "solving the problem in your head" so I didn't quite understand what "subtraction in mind" meant initially. However, I was able to get the gist of it and solve the problem.
MaviDeniz
4 months agoCommunity Member
Thanks a lot for your comment:)