To change a number into another number that is approximately the same value but is easier to work with. E.g. round 561 to the nearest 10 is 560.

Rounding to any number of decimal places

Maths

In this unit, pupils have learnt how to round to a given number of decimal places or significant figures and explored the effect of using rounded numbers for calculations. In the future unit, pupils will investigate the bounds and perform calculations to determine a best/worst case scenario.

The prior unit on place value allowed pupils to develop the skills needed to estimate and round values. By understanding the value of each digit, pupils can determine what other values are close to the original value. This unit continues the exploration of the infinite nature of sets of numbers.

Estimation and rounding

If a degree of accuracy is not stated in a question that you are answering, you should use the {{ }} degree of accuracy as the values in the question.

Calculate the cost of carpeting this area.

3 friends go out for lunch and spend £28.  They pay the same amount each.  What is the smallest amount they each pay to cover the cost of the bill?

This lesson will soon be taken down.

Rounding to any number of decimal places

Lesson outcome