Hi All,

I’m not sure how to ask this question, but I think I do several unnecessary mental steps when adding two one digit numbers when the sum is greater than 10. I guess, I picked up this method when I was a kid, and now it’s a strong habit. I would like to know how to stop doing this!

Let me explain what I mean. I’ll write what happens in my head in quotes.

5 + 9 --> " 5 minus 1 is 4 --> 14"

so, with 9, I subtract one

5 + 7 --> “10 minus 7 is 3, 5 minus 3 is 2 --> 12”

On the other hand, I tend to recognize any two numbers add up to ten without any steps.

E.g. 6+4 --> “10”

What can I do, so that I just know the answer without doing an additional subtraction step?

Thank you for any ideas!!

moo