Award in Mathematics -
Number and Measure (Level 1)
Topic 22: Approximation
These questions are good common sense practical maths.
When you are working out real-life maths problems, you don't always have to use exact values - approximate values will do.
A good example is working out the total cost of several items in a shop.
£3.49 is approximately £3.50
£2.98 is approximately £3.00
£3.50 + £3.00 = £6.50
This is a much easier calculation to do that £3.49 + £2.98, and gives a useful approximate total (useful for working out if you have enough money to buy the two items, or how much change you should get).