What's the fastest way to do these math problems?

Mde
Sat, 26 Sep 2009 22:34:53 +0000

before i go to page 4 and try to offer advice with today’s question i just have to say this thread is amazing and helps me think of all the creative ways of solving the higher-tier math problems (which some i have troubles knowing where to start/understanding wth the question/info is giving) thanks james and spidey and everyone whose contributed to this thread. (can’t believe i just found this)