Mastering Percentages: Unlocking the Power of 10%

Learning Objective

At the end of the lesson, you will be able to work out the percentage of a number using 10% and its multiples.

Introduce the learning objective to the students.

Mastering Percentages: Unlocking the Power of 10%

What do you already know about percentages and working with 10%?

What is a Percentage?

A percentage is a way of expressing a part of a whole as a fraction of 100.

Explain the concept of percentage and its relevance in everyday life.

Understanding 10%

10% is one-tenth of a whole. It is equivalent to dividing a number by 10.

Discuss the significance of 10% and its relationship to the concept of fractions.

Finding 10% of a Number

To find 10% of a number, divide the number by 10.

Provide examples and practice exercises for students to calculate 10% of different numbers.

Multiples of 10%

Multiples of 10% can be found by multiplying the original number by the desired percentage.

Explain how to find percentages such as 20%, 30%, 40%, etc., by using multiples of 10%.

Calculating Percentages: Example 1

Example: Find 30% of 150.

Present an example problem and guide students through the steps to solve it using the concept of multiples of 10%.

Practice Makes Perfect

Solve the following problems:
1. 20% of 80
2. 50% of 120
3. 90% of 450

Assign practice problems to students and encourage them to apply the concept of percentages using 10% and its multiples.

Calculating Percentages: Example 2

Example: What is 70% of 200?

Provide another example problem for students to solve independently or in pairs, reinforcing the use of multiples of 10%.

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.

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.

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.