Chapter 12.5
Rounding Numbers: Clear Examples and Expert Techniques
Discover easy-to-follow rounding examples for whole numbers and decimals. Learn essential techniques to round to the nearest ten, hundred, or thousand. Boost your math confidence today!
What You'll Learn
Identify the place value you need to round to in whole numbers and decimals
Apply the rounding rule: round up if the next digit is 5 or greater, stay the same if less than 5
Recognize that digits before the rounding position stay the same and digits after become zeros
Round whole numbers to the nearest ten, hundred, thousand, and ten thousand
Round decimal numbers to the nearest tenth, hundredth, and thousandth
What You'll Practice
1
Rounding whole numbers like 9,706 to different place values
2
Rounding decimals like 0.4572 to tenths, hundredths, and thousandths
3
Rounding large numbers in real-world contexts like populations and distances
4
Using the box-and-arrow method to identify rounding position and decision digit
Why This Matters
Rounding numbers is essential for estimating calculations, simplifying data, and communicating values clearly in everyday life. You'll use it to check if your math answers make sense, understand statistics in the news, handle money, and work with measurements in science and engineering.
Before You Start — Make Sure You Can:
This Unit Includes
12 Video lessons
Practice exercises
Learning resources
Skills
Place Value
Rounding
Estimation
Whole Numbers
Decimals
Number Sense
