How do you round 5.1 to the nearest whole number?

How do you round 5.1 to the nearest whole number?

In this lesson you will learn to round decimals to the nearest

whole number by using a number line.

Let’s ReviewLet’s Review

0 1 2 3 4 5 6 7 8 9

Number Line

Let’s ReviewLet’s Review

15 = 15.0

365 = 365.0

674 = 674.0

Let’s ReviewCore Lesson

How do you round 7.7 to the nearest whole number using a number line?

7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8

= Numbers closer to 7= Numbers closer to 8

Let’s ReviewCore Lesson

How do you round 5.1 to the nearest whole number?

5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 6

= Numbers closest to 5= Numbers closest to 6

In this lesson you have learned to round decimals to the

nearest whole number by using a number line.

Let’s ReviewGuided Practice

How do you round 8.5 to the nearest whole number?

8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 9

= Numbers closest to 8= Numbers closest to 9

Let’s ReviewExtension Activities

The five top swimmers in an event had the following times:

Emily 64.5 secondsMolly 64.4 secondsMartha 63.9 secondsKathy 64.8 secondsRhonda 63.3 seconds

Using a number line illustrate how to round these numbers to the nearest whole number.

Let’s ReviewExtension Activities

Base Block Decimals

Get a partner and a set of base ten blocks.Rods = ones place, units =tenths place.1

2Create 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.

Let’s ReviewQuick 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?