1. How do you round 5.1 to the nearest whole number?

2. In this lesson you will learn to round decimals to the nearest whole number by using a number line.

3. Let’s Review 0123456789 Number Line

4. Let’s Review 15 = 15.0 365 = 365.0 674 = 674.0

5. Core Lesson How do you round 7.7 to the nearest whole number using a number line? 77.17.27.37.47.57.67.77.87.98 =Numbers closer to 7 =Numbers closer to 8

6. Let’s Review Core Lesson How do you round 5.1 to the nearest whole number? 55.15.25.35.45.55.65.75.85.96 =Numbers closest to 5 =Numbers closest to 6

7. In this lesson you have learned to round decimals to the nearest whole number by using a number line.

8. Let’s Review Guided Practice How do you round 8.5 to the nearest whole number? 88.18.28.38.48.58.68.78.88.9 9 =Numbers closest to 8 =Numbers closest to 9

9. Let’s Review Extension Activities The five top swimmers in an event had the following times: Emily 64.5 seconds Molly 64.4 seconds Martha 63.9 seconds Kathy 64.8 seconds Rhonda 63.3 seconds Using a number line illustrate how to round these numbers to the nearest whole number.

10. Let’s Review Extension Activities Base Block Decimals Get a partner and a set of base ten blocks. Rods = ones place, units =tenths place. 1 2 Create the following decimals using the base ten blocks: 4.2 7.6 9.3 5.4 3.1 6.5 2.9 8.7 3 Round the decimals to the nearest whole number.

11. Let’s Review Quick Quiz How do you round 4.6 to the nearest whole number using a number line? How do you round 9.2 to the nearest whole number using a number line?