Maths dictionary
What is rounding in maths?
Rounding replaces a number with a simpler one that is close to it, such as the nearest ten or hundred.
Definition
Rounding replaces a number with a simpler one that is close to it, such as the nearest ten or hundred.
Example
47 rounded to the nearest 10 is 50. 342 rounded to the nearest 100 is 300.
Tip
Look at the digit to the right: 5 or more rounds up, 4 or less rounds down.
Practise it
- Play: Bubble Pop Maths
- Worksheets: Rounding to the nearest 10 (Grade 2)
- Worksheets: Rounding to the nearest 100 (Grade 3)
- Online maths practice
Quick check: try these
Work each one out on paper, then tap the question to see the answer.
Round 265 to the nearest 10:
Answer: 270
Round 273 to the nearest 10:
Answer: 270
Round 953 to the nearest 10:
Answer: 950
Round 512 to the nearest 10:
Answer: 510
Learn it in depth
Rounding is part of Decimals for Class 6: notes, formulas, solved examples with every step, common mistakes and ten practice questions with answers. Want a teacher to go through it with you? See Class 6 maths tuition.
Related words
FAQ
Rounding: questions
What is rounding in maths?
Rounding replaces a number with a simpler one that is close to it, such as the nearest ten or hundred. 47 rounded to the nearest 10 is 50. 342 rounded to the nearest 100 is 300.
What is a common mistake with rounding?
Look at the digit to the right: 5 or more rounds up, 4 or less rounds down.
Where do students learn rounding?
Decimals is usually taught in Class 6, and the ideas come back in later classes. Chapter names and order differ by board and textbook, so follow your own textbook. We have a full page with notes, solved examples and practice questions.
Play it, don't just read it
Try it now: Profit and loss
Eight quick questions with instant feedback. Your score is saved on this device and counts in the games and learning paths too.
Profit and loss (Grade 7): Finding profit or loss as a percentage of the cost price, and the selling price after a gain or loss. Open the practice page or print a worksheet.
Or play a game
- Percent PowerPractise finding percentages of amounts and understanding percentage…Play
- Estimation StationEstimate big sums without a calculator and see how close you get.Play
- Number Sense LabExplore place value, number patterns, rounding, factors and multiples…Play