Rounding to the Nearest 10 and 100 - Printable Math Worksheet for 8-Year-Olds (Grade 3)

Instructions

Let's go on a rounding adventure! Rounding makes big numbers simpler and easier to work with. Remember the simple rule:

Look at the digit to the right of the place you are rounding to.
Five or more, let it soar! (Round UP)
Four or less, let it rest! (Round DOWN)

Part 1: Round to the Nearest 10

For these numbers, look at the ones digit to decide if you will round up or down. Your answer will always end in a 0.

Example: 37 -> The ones digit is 7. That's "five or more," so we round UP to 40.

Example: 82 -> The ones digit is 2. That's "four or less," so we round DOWN to 80.

1. 48 rounded to the nearest 10 is ___________.


2. 61 rounded to the nearest 10 is ___________.


3. 25 rounded to the nearest 10 is ___________.


4. 93 rounded to the nearest 10 is ___________.


5. 127 rounded to the nearest 10 is ___________.


6. 175 rounded to the nearest 10 is ___________.

Part 2: Round to the Nearest 100

Now, let's try bigger numbers! Look at the tens digit to decide if you round up or down. Your answer will always end in 00.

Example: 462 -> The tens digit is 6. That's "five or more," so we round UP to 500.

Example: 239 -> The tens digit is 3. That's "four or less," so we round DOWN to 200.

1. 170 rounded to the nearest 100 is ___________.


2. 340 rounded to the nearest 100 is ___________.


3. 781 rounded to the nearest 100 is ___________.


4. 550 rounded to the nearest 100 is ___________.


5. 814 rounded to the nearest 100 is ___________.


6. 499 rounded to the nearest 100 is ___________.

Part 3: Rounding Master Challenge

Read carefully! Round each number below to the nearest 10 AND the nearest 100.

Answer Key

Part 1: Round to the Nearest 10

1. 50
2. 60
3. 30
4. 90
5. 130
6. 180

Part 2: Round to the Nearest 100

1. 200
2. 300
3. 800
4. 600
5. 800
6. 500

Part 3: Rounding Master Challenge