SHould we ask Mark to split this thread into two threads?

Yes I think estimation is important. Singapore math is heavily into estimation. For a problem like 23x59, it wants the kids to do 20x60 first, then work out the problem. I think it helps to know the ballpark your answer should be in.

As well as estimating how much a pint is or 3L etc. Some things I have no idea about like how much does an elephant way anyhow?

Last edited by Dazed&Confuzed; 02/22/09 10:36 AM.