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.

How to Round Numbers

When rounding, numbers can be rounded up or rounded down. This depends on the neighboring digit of the place value to be rounded.

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, keep the rounding digit the same. This is called rounding down.
  Example: 54 rounded to the nearest ten is 50.
• When rounding to the left hand side of the decimal, all digits to the right side of the rounding digit will become 0 up until the decimal point.
• When rounding to the right hand side of the decimal, drop all digits to the right of the rounding digit.