Search found 2 matches

by Wixx
Wed Aug 27, 2008 9:25 pm UTC
Forum: Mathematics
Topic: Favorite mental math tricks/shortcuts
Replies: 61
Views: 9863

Favorite mental math tricks/shortcuts

Anyone know any cool or useful shortcuts or tips? Some of my favorites: If you know the squares of numbers, this one can be useful: Ex: 12x14 = (13x13) - 1 = 168 24x26 = (25x25) - 1 = 624 To figure out approx one's salary: Wage/hr * 2000 = Salary in one year Ex: $8/hr = $16,000/yr (aka don't drop ou...
by Wixx
Wed Aug 27, 2008 9:12 pm UTC
Forum: Science
Topic: Favorite home experiments
Replies: 590
Views: 482537

Re: Favorite home experiments

Pro tip: Following directions from texts from 80's BBS' = not always FTW. My friends and I accidentally created a gas that was toxic, and melted the container it was in... Luckily this was done outside. Still no idea how what reacted to make the gas. Pro tip #2: If you're following the ingredients f...

Go to advanced search