Rounding means making a number simpler but keeping its value close to what it was.

The result is less accurate, but easier to use.

Example: 73 rounded to the nearest ten is 70, because 73 is closer to 70 than to 80. But 76 goes up to 80.

This is the common method:

• Decide which is the last digit to keep

• Increase it by 1 if the next digit is 5 or more (this is called rounding up)

• Leave it the same if the next digit is less than 5 (this is called rounding down)

The result is less accurate, but easier to use.

Example: 73 rounded to the nearest ten is 70, because 73 is closer to 70 than to 80. But 76 goes up to 80.

This is the common method:

• Decide which is the last digit to keep

• Increase it by 1 if the next digit is 5 or more (this is called rounding up)

• Leave it the same if the next digit is less than 5 (this is called rounding down)