3rd Grade Math · Rounding to the Nearest 10 and 100
Nearest 100 Worksheets
Fresh practice, ready to print. Answer key included.
Numbers such as 362 and 150, rounded to the nearest hundred.
Make it yours
Or start with a ready-made version.
How it works: a quick refresher
The rules this worksheet practices, then one problem worked from start to finish.
| Strategy | How it works |
|---|---|
| Find the place you are rounding to | For the nearest 10, look at the tens. For the nearest 100, look at the hundreds. |
| Look one place to the right | That digit decides. For the nearest 10 it is the ones digit. For the nearest 100 it is the tens digit. |
| 5 or more rounds up | This page uses half up. 65 to the nearest 10 is 70, and 150 to the nearest 100 is 200. |
| 4 or less stays | 64 to the nearest 10 is 60. 149 to the nearest 100 is 100. |
| Zeros fill the places you rounded off | 47 to the nearest 10 is 50. The ones digit becomes 0. |
Worked example
Round 65 to the nearest 10.
- 165 is between 60 and 70.
- 2The ones digit is 5, and 5 rounds up.
- 365 rounds to 70.
Ready-made versions
Three fixed versions you can link to or share. Each is a PDF with its own answer key.
- Nearest 100 Worksheets, version 1Worksheet PDFAnswer key PDF
- Nearest 100 Worksheets, version 2Worksheet PDFAnswer key PDF
- Nearest 100 Worksheets, version 3Worksheet PDFAnswer key PDF
Grade level and standard
Written for 3rd grade math (place value) and aligned to CCSS 3.NBT.A.1. It also works as review in later grades.
Common questions
- Is there an answer key?
- Yes. Every worksheet has a matching answer key with each answer worked on the same grid or layout as the question. The worksheet ID printed at the bottom of each page pairs a sheet with its key.
- Which way does a 5 go?
- Up. 5, 15, and 25 round to 10, 20, and 30. 50, 150, and 250 round to 100, 200, and 300. Some textbooks call this rounding half up.
- Can an answer be 0 or 1,000?
- Nothing here rounds to 0, because the numbers start at 5 for tens and 50 for hundreds. 1,000 can be an answer, for example when 962 is rounded to the nearest 100.
- How many different versions are there?
- About a million per skill. Each time you press the button the problems are generated fresh, so you can print a different version for every student, a retake, or another night of practice.
- Are the worksheets free?
- Yes. They are free to print and copy for your home or classroom, with no sign-up.