Rounding to decimal places
Round a decimal to a stated number of decimal places.
- Count places after the decimal point.
- Use the next digit to decide whether to increase the final kept digit.
- Keep any trailing zeros needed to show the requested accuracy.
Example 1
Round to 2 decimal places.
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.
Example 2
Round to 2 decimal places.
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.
Remember
Keep any trailing zeros needed to show the requested accuracy.
Your turn
Round to 1 decimal place.
Check answer
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.
Round to 2 decimal places.
Check answer
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.
Round to 1 decimal place.
Check answer
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.
Round to 1 decimal place.
Check answer
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.
Round to 2 decimal places.
Check answer
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.
Round to 1 decimal place.
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.
Round to 2 decimal places.
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.
Round to 1 decimal place.
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.
Round to 1 decimal place.
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.
Round to 2 decimal places.
Blue: last place kept. Orange: deciding digit.
A deciding digit of 5 or more increases the blue digit by one. Replace discarded whole-number places with zeros.