subway??? no man this is domway. we tell you how you want your sandwich and u shut up and eat it.
HOW DID I NOT KNOW THIS?!
Why do I learn more about math from Tumblr than my 12+ years of formal education????????
No math teacher ever taught me this trick. Got damn.
This is great and all if you know how to subtract things from 100
I’D RATHER SUBTRACT THINGS FROM 100 THAN SPEND AGES MULTIPLYING LARGE NUMBERS FUCK SC HOOL I FUCKXING QUIT
I’m not going to work out the general case in this airport lobby, but it looks like the usefulness of this method degrades very quickly as the difference from 100 of the terms increases. To do 15 × 90 for instance yields 5 and 850; to derive the answer of 1,350 you have to arrange (mentally) the numbers in columns and add the 5 and the 8 before combining 5 + 8 (= 13) with 50. This isn’t obviously easier than just doing multiplication the usual way.
i cant even write with a pencil
“We can let our ideals suffocate us or we can survive…Nuclear energy—now in its fourth generation—is at least as safe as any other form of power. Fukushima was a disaster, but was it worse than the fact that our atmosphere now contains more than four hundred parts per million of carbon dioxide, a figure that many climate scientists believe assures catastrophe? Sadly, we may soon find out.”Michael Specter explains why he believes it’s time to go nuclear: http://nyr.kr/11C61Bi