## Refine by resource type

## Refine by year level

## Refine by learning area

## Refine by topic

**Related topic*** No suggestions

Use estimation and rounding to check the reasonableness of answers to calculations (ACMNA099)

- recognising the usefulness of estimation to check calculations
- applying mental strategies to estimate the result of calculations, such as estimating the cost of a supermarket trolley load

Rounding, Accuracy and precision