Rounding Whole Numbers
Learning Outcomes
- Identify the place value of a digit used for rounding
- Round a whole number to a specific place value







Round a whole number to a specific place value
- Locate the given place value. All digits to the left of that place value do not change.
- Underline the digit to the right of the given place value.
- Determine if this digit is greater than or equal to .
- Yes—add to the digit in the given place value.
- No—do not change the digit in the given place value.
- Replace all digits to the right of the given place value with zeros.
example
Round to the nearest ten. SolutionLocate the tens place. | ![]() |
Underline the digit to the right of the tens place. | ![]() |
Since is less than , do not change the digit in the tens place. | ![]() |
Replace all digits to the right of the tens place with zeros. | ![]() |
Rounding to the nearest ten gives . |
try it
Round to the nearest ten: .Answer:
Round to the nearest ten: .Answer:
Example
Round each number to the nearest hundred:Answer:
1. | |
Locate the hundreds place. | ![]() |
The digit of the right of the hundreds place is . Underline the digit to the right of the hundreds place. | ![]() |
Since is greater than or equal to , round up by adding to the digit in the hundreds place. Then replace all digits to the right of the hundreds place with zeros. | ![]() |
2. | |
Locate the hundreds place. | ![]() |
Underline the digit to the right of the hundreds place. | ![]() |
The digit to the right of the hundreds place is . Since is greater than or equal to , round up by added to the . Then place all digits to the right of the hundreds place with zeros. | ![]() |
try it
Round to the nearest hundred: .Answer:
Round to the nearest hundred: .Answer:
example
Round each number to the nearest thousand:Answer:
1. | |
Locate the thousands place. Underline the digit to the right of the thousands place. | ![]() |
The digit to the right of the thousands place is . Since is less than , we do not change the digit in the thousands place. | ![]() |
We then replace all digits to the right of the thousands pace with zeros. | ![]() |
2. | |
Locate the thousands place. | ![]() |
ⓑUnderline the digit to the right of the thousands place. | ![]() |
The digit to the right of the thousands place is . Since is greater than or equal to , round up by adding to the . Then replace all digits to the right of the thousands place with zeros. | ![]() |