I like doing maths in my head

Ppl like how do you do those big multiplications in your head? Take 13 times 17. 13 times 10 is 130 13 times 7 is 70 plus 21 so 91. And 91 plus 130 is 231. So 13 times 17 is 231. 🤷🏼 It entertains myself.

Top | New | Old

JimboSaturn · 56-60, M

That's how I do it too! I can only multiply two, two-digit numbers well though because I forget the numbers I've already worked out, more practice I guess!

View 3 more replies »

pride49 · 31-35, M

@JimboSaturn foiling?

JimboSaturn · 56-60, M

@pride49 back in school they called it that in my day : Foil
https://en.wikipedia.org/wiki/FOIL_method

This is not exactly what we do

JimboSaturn · 56-60, M

@pride49 I just looked that up, I've never seen that before, cool! We learnt it by the carry over method

AthrillatheHunt · 51-55, M

I ask my students to explain their mathematical thinking. You sound like a good student .

Ducky · 31-35, F

Not a bad skill to have. I've never been good at math and still count basic math with my fingers. 😅

pride49 · 31-35, M

@Ducky When ppl say you good at math I'm think about trunchbull on Matilda saying "so can a calculator" lol

NeuroticByNature · 41-45, F

I refuse to do mental math but I have secret admiration for people who are good at it.

JoyfulSilence · 51-55, M

I open a spreadsheet.

CrazyMusicLover · 31-35

It can be a pretty effective and useful distraction, tbh.

JimboSaturn · 56-60, M

@CrazyMusicLover Good way to sharpen the mind especially as you get older lol

TheNudistGirl · 26-30, F

Show offfff

Nihiless

It's awesome! It's better than thinking about how utterly s*** life really is. 😁

FrogManSometimesLooksBothWays · M

[image/video - please log in to see this content]

View 1 more replies »

FrogManSometimesLooksBothWays · M

@pride49 He did calculus in his head.

pride49 · 31-35, M

@FrogManSometimesLooksBothWays i know but why's he crazy about it

FrogManSometimesLooksBothWays · M

@pride49 He's the Nobel prize winning theoretical physicist, Richard Feynman who is hard core about his bongos. [media=https://youtu.be/qWabhnt91Uc]

Add a comment...