approximate, approximation
• to estimate a number, amount or total, often
rounding it off to the nearest 10 or 100.
EXAMPLES:
more than 5 > up
less than 5 < down1. Look at the digit in the place value to be rounded to.
2. Increase it by 1 if the digit to the right of it is 5 or more.
3. Leave it the same if the digit to the right of it is less than 5.
4. Remove everything to the right of the digit.
Example:
Round 625.475 to 1 decimal place ~ 625.475 ≈ 625.5
4. Replace whole numbers to the right of the digit with zero(s),
then remove everything to their right.
Examples:
Round 625.475 to 10 ~ 625.475 ≈ 630
Round 625.475 to 100 ~ 625.475 ≈ 600
