How to Estimate in Maths #21

The video tutorial explains the concept of estimation, highlighting that it is a method of rough calculation to get an answer close to the true value. It discusses techniques like rounding numbers to significant figures and applies these techniques to a real-life scenario of estimating the cost of laying astroturf in a garden. The tutorial emphasizes the importance of balancing rounding up and down to minimize errors and achieve a result in the right ballpark.

What is the main difference between estimating and guessing?

How do you round numbers when estimating?

In the example given, how did the teacher estimate the area of the garden?

What was the estimated cost of the astroturf for the garden?

Why is it important to round numbers evenly when estimating?