this post was submitted on 11 Dec 2024
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If it bothers your OCD, think of it more as (7x3)+(10x3)=17x3=51
Dude/ Dudette that's worse. 7x3=21, 10x3=30, 21+30=~~492~~ 51
That does less insane to the membrane
I see them as the same except that your way illustrates what his parentheses are doing.
The way I see it the parentheses are good, it the 17x3 that hurts my brain.
It's already broken down, then gets more complicated by the 17x3. In my mind I now need to separate 17 into 10 and 7 then multiply them each by 3 and add them together, which is where we started in the first place.
Brains are different, that's how mine goes though.
I understood that to be a reference to the original screenshot. Thus the two equal signs. It was a way to walk you through how the breakdown ties back in.
¯\_(ツ)_/¯
Not disagreeing, and I upvoted you for a different perspective. I did not see it that way, though I do now.
Like I said, brains are different.
Nah, 45 + 6
153 + 23
This is how I have always calculated in my head. It used to drive my mom and my teachers crazy when they asked me to verbalize my calculations. It was like I was hurting them somehow. I never understood why.
Or the way I do it:
So the factors are 17 and 3. I know 3 is a factor because 5+1=6, which is divisible by 3, so I just use a convenient multiple of 3 that's pretty close to the actual number to get the divisor.
I have young kids and they keep asking me to do crazy math problems while driving, so that's generally the trick I use.