Exploring the Wonders of the Base 10 Number System

Exploring the Wonders of the Base 10 Number System

Learning Objective

At the end of the lesson, you will be able to understand the structure of the base 10 number system and perform basic operations.

What do you already know about the base 10 number system?

Slide 1: Introduction

The base 10 number system, also known as the decimal system, is the most commonly used number system. It uses 10 digits from 0 to 9 to represent numbers.

Slide 2: Place Value

Each digit in a base 10 number has a specific place value. The rightmost digit represents ones, the next digit to the left represents tens, then hundreds, thousands, and so on.

Slide 3: Example - Place Value

In the number 245, the '5' represents 5 ones, the '4' represents 4 tens, and the '2' represents 2 hundreds.

Slide 4: Expanded Form

Expanded form breaks down a number into the sum of its place values. For example, 245 can be written as 200 + 40 + 5.

Slide 5: Interactive Activity

Let's practice! Write the expanded form of the number 682.

Slide 6: Addition in Base 10

When adding numbers in the base 10 system, we align the digits based on their place value and perform column-wise addition.

Slide 7: Example - Addition

Let's add 245 and 138. Start by adding the ones, then the tens, and finally the hundreds. The sum is 383.

Slide 8: Conclusion

Congratulations! You've learned about the structure of the base 10 number system. Practice and explore further to strengthen your understanding.

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.