Free Math Games & Activities for Kids
Rounding numbers: to round a number you decide which is the last digit to keep. You leave it the same if the next digit is less than five, called rounding down. Or increase it by one if the next digit is five or more, called rounding up.
For example: round 86 to the nearest 10. You keep the 8, the next digit is 6, which is five or more, so you increase the 8 by 1 to 9. The answer is 90!