this post was submitted on 01 Oct 2025
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Mental math tricks are important.
Take 2 from the 7 and give it to the 8. You now have 10 + 5. Much easier math.
Hold on, I just need to check something. Looks around nervously
Yes, that seems easier to me as well! I was not allowed to do this according to the teacher when I was a child. They wanted me to do it in some weird counterintuitive way. But I was very stubborn and I am still doing calculations in this way. She is not the boss of the way I think!