realnfo.com
Encyclopedia of Electrical Engineering
HOME TABLE OF CONTENTS PROJECTS TECHNOLOGY
HOME TABLE OF CONTENTS
realnfo.com
Encyclopedia of Electrical Engineering
HOME TABLE OF CONTENTS PROJECTS TECHNOLOGY
HOME TABLE OF CONTENTS

Rounding Off

Rounding means making a number simpler but keeping its value close to what it was. The result is less accurate, less exact, but easier to use.
Example: 73 rounded to the nearest ten is 70, because 73 is closer to 70 than to 80.

What are the rules for rounding off numbers?

Here's the general rule for rounding:
- If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up by 1.
Example: 57 rounded to the nearest ten is 60.
- If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down by 1.
Example: 54 rounded to the nearest ten is 50.