Rounding Numbers Practice
20 questions · 60 seconds · round to 10 / 100 / 1,000
Free · no login · instant feedback on every answer
Make estimation instant: 20 rounding questions — nearest ten, nearest hundred, nearest thousand — with immediate feedback on each answer. Rounding looks like a small skill, but it powers every estimate a student will ever make.
The rule is simple; the slip is identifying which digit decides. Rounding 3,478 to the nearest hundred means finding the 4, checking the 7 beside it, and rounding up to 3,500 — and doing that fast requires place-value recognition, which is exactly what a timed drill trains.
Tips That Make It Stick
- Underline the target digit. Rounding 6,382 to the nearest hundred? Underline the 3. The digit immediately to its right — the 8 — makes the call.
- Five rounds up. If the deciding digit is 5, 6, 7, 8, or 9, round up; 0 through 4, round down. There is no "sometimes" in school rounding.
- Everything after becomes zero. 2,749 to the nearest hundred is 2,700 — the tens and ones reset to zero. Forgetting the reset is the second-most-common rounding error.
Frequently Asked Questions
What are the rules for rounding numbers?
Find the digit in the place you are rounding to, look one digit to its right, and round up if that digit is 5 or more (down if 4 or less). Every digit after the rounding place becomes zero.
Why does 5 round up?
Five is exactly halfway, so a convention is needed — and school math universally rounds it up. That keeps the rule simple and consistent across every classroom and test.
What grade learns rounding?
Rounding to the nearest 10 and 100 is a 3rd grade skill; 4th grade extends it to any place value and uses it for estimating sums, differences, and products.
📝 Matching Printable Worksheets
Prefer paper practice? These free PDF worksheets cover the same skill — each includes an answer key: