What is Rounding?

Rounding is a way of making a number simpler but keeping its value close to what it was. We do this when we want to make calculations easier or when we want to express a number in a more general way.

Why Do We Round?

Sometimes, we have very large or very small numbers, and rounding helps us to make them easier to understand or work with. For example, if you have 487 apples, you might say you have about 500 apples. This is easier for people to understand!

How to Round Numbers

Key Rules for Rounding

  1. Identify the Place Value: Decide which digit you want to round to. It could be the nearest ten, hundred, or any other place value.
  2. Look at the Next Digit: Check the digit to the right of the place value you are rounding to.
    • If this digit is 5 or more, you round up.
    • If this digit is 4 or less, you round down.

Examples

  • Rounding to the Nearest Ten:
    • 34: Look at the 4 (next digit). Since 4 is less than 5, we round down to 30.
    • 46: Look at the 6. Since 6 is 5 or more, we round up to 50.
  • Rounding to the Nearest Hundred:
    • 238: Look at the 3. Since 3 is less than 5, we round down to 200.
    • 754: Look at the 5. Since 5 is 5 or more, we round up to 800.

Tips and Tricks

  • Number Line: Visualise the numbers on a number line. This can help you see which number is closer to what you are rounding to.
  • Practice: The more you round numbers, the easier it gets. You can practice with everyday numbers, like prices or distances.

Questions for Practice

Easy Level Questions (20 questions)

  1. Round 23 to the nearest ten.
  2. Round 47 to the nearest ten.
  3. Round 58 to the nearest ten.
  4. Round 92 to the nearest ten.
  5. Round 16 to the nearest ten.
  6. Round 75 to the nearest ten.
  7. Round 81 to the nearest ten.
  8. Round 30 to the nearest ten.
  9. Round 67 to the nearest ten.
  10. Round 89 to the nearest ten.
  11. Round 14 to the nearest ten.
  12. Round 34 to the nearest ten.
  13. Round 25 to the nearest ten.
  14. Round 53 to the nearest ten.
  15. Round 72 to the nearest ten.
  16. Round 11 to the nearest ten.
  17. Round 88 to the nearest ten.
  18. Round 40 to the nearest ten.
  19. Round 37 to the nearest ten.
  20. Round 59 to the nearest ten.

Medium Level Questions (20 questions)

  1. Round 145 to the nearest hundred.
  2. Round 287 to the nearest hundred.
  3. Round 563 to the nearest hundred.
  4. Round 942 to the nearest hundred.
  5. Round 349 to the nearest hundred.
  6. Round 876 to the nearest hundred.
  7. Round 221 to the nearest hundred.
  8. Round 595 to the nearest hundred.
  9. Round 408 to the nearest hundred.
  10. Round 643 to the nearest hundred.
  11. Round 129 to the nearest hundred.
  12. Round 754 to the nearest hundred.
  13. Round 829 to the nearest hundred.
  14. Round 315 to the nearest hundred.
  15. Round 462 to the nearest hundred.
  16. Round 803 to the nearest hundred.
  17. Round 934 to the nearest hundred.
  18. Round 678 to the nearest hundred.
  19. Round 107 to the nearest hundred.
  20. Round 499 to the nearest hundred.

Hard Level Questions (20 questions)

  1. Round 1,234 to the nearest hundred.
  2. Round 2,567 to the nearest hundred.
  3. Round 3,891 to the nearest hundred.
  4. Round 4,444 to the nearest hundred.
  5. Round 5,678 to the nearest hundred.
  6. Round 6,789 to the nearest hundred.
  7. Round 7,896 to the nearest hundred.
  8. Round 8,101 to the nearest hundred.
  9. Round 9,234 to the nearest hundred.
  10. Round 10,567 to the nearest hundred.
  11. Round 12,345 to the nearest hundred.
  12. Round 13,678 to the nearest hundred.
  13. Round 14,789 to the nearest hundred.
  14. Round 15,999 to the nearest hundred.
  15. Round 16,234 to the nearest hundred.
  16. Round 17,890 to the nearest hundred.
  17. Round 18,456 to the nearest hundred.
  18. Round 19,321 to the nearest hundred.
  19. Round 20,987 to the nearest hundred.
  20. Round 21,654 to the nearest hundred.

Answers

Easy Level Answers

  1. 20
  2. 50
  3. 60
  4. 90
  5. 20
  6. 80
  7. 80
  8. 30
  9. 70
  10. 90
  11. 10
  12. 30
  13. 30
  14. 50
  15. 70
  16. 10
  17. 90
  18. 40
  19. 40
  20. 60

Medium Level Answers

  1. 100
  2. 300
  3. 600
  4. 900
  5. 300
  6. 900
  7. 200
  8. 600
  9. 400
  10. 600
  11. 100
  12. 800
  13. 800
  14. 300
  15. 500
  16. 800
  17. 900
  18. 700
  19. 100
  20. 500

Hard Level Answers

  1. 1,200
  2. 2,600
  3. 3,900
  4. 4,400
  5. 5,700
  6. 6,800
  7. 7,900
  8. 8,100
  9. 9,200
  10. 10,600
  11. 12,300
  12. 13,700
  13. 14,800
  14. 16,000
  15. 16,200
  16. 18,000
  17. 18,500
  18. 19,300
  19. 21,000
  20. 22,000

Now that you know how to round numbers, remember to practice! Rounding can be fun and helpful in everyday life!