What is Rounding?

Rounding is a way to make numbers easier to work with. Sometimes, we need to make a number simpler by changing it to the nearest whole number. A whole number is a number without any fractions or decimals, like 1, 2, 3, and so on.

Why Do We Round?

We round numbers to make them easier to understand. For example, if you have 4.7 apples, it’s easier to say you have about 5 apples.

How to Round to the Nearest Whole Number

Key Rules for Rounding

  1. Look at the Decimal: Check the number after the decimal point.
  2. Decide What to Do:
    • If the decimal is 0, 1, 2, 3, or 4, you round down.
    • If the decimal is 5, 6, 7, 8, or 9, you round up.

Examples

  • Rounding 3.2:
    • Look at the decimal (2).
    • Since it’s 0, 1, 2, 3, or 4, we round down.
    • So, 3.2 becomes 3.
  • Rounding 6.8:
    • Look at the decimal (8).
    • Since it’s 5, 6, 7, 8, or 9, we round up.
    • So, 6.8 becomes 7.

Visual Trick

You can think of rounding like this:

  • 0, 1, 2, 3, 4 = Down to the lower number
  • 5, 6, 7, 8, 9 = Up to the higher number

Tips and Tricks

  • Always remember to look at the first number after the decimal!
  • You can use a number line to see where the number falls between two whole numbers.
  • Practice makes perfect! The more you round, the better you will get at it.

Questions

Easy Level Questions

  1. Round 2.3 to the nearest whole number.
  2. Round 4.6 to the nearest whole number.
  3. Round 5.1 to the nearest whole number.
  4. Round 7.0 to the nearest whole number.
  5. Round 8.4 to the nearest whole number.
  6. Round 3.7 to the nearest whole number.
  7. Round 9.2 to the nearest whole number.
  8. Round 6.5 to the nearest whole number.
  9. Round 1.9 to the nearest whole number.
  10. Round 0.8 to the nearest whole number.

Medium Level Questions

  1. Round 12.3 to the nearest whole number.
  2. Round 14.7 to the nearest whole number.
  3. Round 19.5 to the nearest whole number.
  4. Round 10.6 to the nearest whole number.
  5. Round 15.4 to the nearest whole number.
  6. Round 17.8 to the nearest whole number.
  7. Round 11.2 to the nearest whole number.
  8. Round 20.9 to the nearest whole number.
  9. Round 13.1 to the nearest whole number.
  10. Round 18.3 to the nearest whole number.

Hard Level Questions

  1. Round 29.4 to the nearest whole number.
  2. Round 22.6 to the nearest whole number.
  3. Round 25.5 to the nearest whole number.
  4. Round 31.7 to the nearest whole number.
  5. Round 27.9 to the nearest whole number.
  6. Round 36.2 to the nearest whole number.
  7. Round 40.8 to the nearest whole number.
  8. Round 33.3 to the nearest whole number.
  9. Round 38.1 to the nearest whole number.
  10. Round 45.6 to the nearest whole number.

Answers

Easy Level Answers

  1. 2
  2. 5
  3. 5
  4. 7
  5. 8
  6. 4
  7. 9
  8. 7
  9. 2
  10. 1

Medium Level Answers

  1. 12
  2. 15
  3. 20
  4. 11
  5. 15
  6. 18
  7. 11
  8. 21
  9. 13
  10. 18

Hard Level Answers

  1. 29
  2. 23
  3. 26
  4. 32
  5. 28
  6. 36
  7. 41
  8. 33
  9. 38
  10. 46

Now you have learned how to round to the nearest whole number! Keep practicing, and you’ll become a rounding expert!