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Rounding and Estimating
Course modified date: 18 Jun 2022
Learn about rounding and estimating, rounding numbers to the nearest 10, 100 or 1000 and using rounding to estimate basic calculations. This course is ideal for beginners.
Introduction
Rounding numbers is a way to get a rough idea or an estimate. An estimate might be a littlemore or a little less than the exact figure. Rounding means making a number simpler but keeping its value close to what it was.
Although rounding won’t give you an exact figure, by carrying out an estimate you can check that the answer to a problem is sensible. For example, it’s a good idea to estimate the answer first when using a calculator in case you make keying errors.
Estimation is also really useful with multiple-choice test questions. It helps you decide which option is the correct answer, before checking by carrying out calculations.
3 of 21 – Benefits of rounding
Rounding is a really important tool with a number of benefits, such as:
· Making it easier to describe and understand numbers
· Making calculations easier
· Making it easier to estimate answers
· Helping you to identify mistakes in maths work
· Being useful when you don’t need an exact answer
You will learn
- Round numbers to the nearest 10,100 or 1000
- Use rounding to estimate basic calculations
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