Calculating Bounds (Maths GCSE - Foundation and Higher) 

This video follows on from the 'finding bounds' video: • Finding Bounds - GCSE ...
It takes the basics of finding upper and lower bounds and applies them to harder more involved questions.
Bounds is a topic that could come up in either the foundation or higher Maths GCSE exam so worth having a bit of a practise and doing some revision. That said the examples in the foundation paper won't be as hard as many of those I've included here.As with the other videos I've been doing recently I go through many examples - you probably don't need to watch all of them so I list the timings below so you can jump just to the part you need.
1:14 - Bounds and the perimeter of shapes
3:35 - Bounds and the area of shapes
5:27 - Bounds and formulas (A-B)
7:24 - Bounds and formulas (V=d/t)
10:44 - Bounds and 'suitable degrees of accuracy'
13:32 - Bounds and average speed
17:27 - Bounds and formulas involving fractions and square roots