Rounding Decimals Made Easy!

• Mathematics
• Primary Education

Rounding Decimals Made Easy!

Learning Objective

At the end of the lesson, you will be able to round decimals to the nearest whole number.

Introduce the learning objective and explain its importance.

What do you already know about rounding decimals?

What are decimals?

Decimals are a way to represent numbers that are not whole. They are written with a decimal point followed by digits that represent a value less than one.

Explain the concept of decimals and give examples.

Rounding Decimals

Rounding decimals means finding the nearest whole number to a given decimal.

Introduce rounding decimals and give examples.

Rounding to the Nearest Whole Number

To round a decimal to the nearest whole number, look at the digit to the right of the decimal point. If it is 5 or more, round up. If it is less than 5, round down.

Explain the process of rounding to the nearest whole number and give examples.

Examples

Round 3.2 to the nearest whole number.
Step 1: Look at the digit to the right of the decimal point, which is 2.
Step 2: Since 2 is less than 5, round down.
Step 3: The rounded whole number is 3.

Give examples of rounding decimals to the nearest whole number and guide students through the steps.

More Examples

Round 5.7 to the nearest whole number.
Step 1: Look at the digit to the right of the decimal point, which is 7.
Step 2: Since 7 is 5 or more, round up.
Step 3: The rounded whole number is 6.

Give more examples of rounding decimals to the nearest whole number and guide students through the steps.

Practice Time!

Round the following decimals to the nearest whole number:
1) 4.6
2) 2.8
3) 7.3

Provide practice problems for students to solve on their own or in pairs.

Conclusion

Congratulations! You now know how to round decimals to the nearest whole number.

Summarize the key points of the lesson and encourage students to practice on their own.

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you want to know more about.

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.

Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.