3 ms·
Similar here, but based on memorization. Since I know twelve squared ((12 * 12) = 144) by rote, the rest is easy. 14 * 12 = (12^2) + (12*2) = 168
by jcr 14y ago
Similar here, but based on memorization. Since I
know twelve squared ((12 * 12) = 144) by rote, the
rest is easy.
14 * 12 = (12^2) + (12*2) = 168
- drharris 14y agoI tend to use the tens as well, but in this case I would have used the 12*12 + 24 trick. I also use some of the others listed here, so it makes me happy to know there are people like me out there.