Hi ladies and gents. We've been working on estimating the answers to calculations in class. This is really helpful in lots of real life situations like when you quickly want to work out how much your shopping will cost in the supermarket.
Here's a couple of videos that explain the idea of estimating the answers to calculations:
Khan Academy Estimation Video 1
Khan Academy Estimation Video 2
Hopefully after watching these you'll understand that estimating is all about getting the answer to a calculation quickly and that is doesn't have to be exact, just close.