Mastering Percentage Increase and Decrease

Mastering Percentage Increase and Decrease
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Slide 1: Diapositive

Cette leçon contient 13 diapositives, avec quiz interactifs et diapositives de texte.

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Mastering Percentage Increase and Decrease

Slide 1 - Diapositive

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Learning Objective
At the end of the lesson, you will be able to calculate percentage increase and decrease.

Slide 2 - Diapositive

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What do you already know about percentages?

Slide 3 - Carte mentale

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What is Percentage?
Percentage is a way to express a fraction or a part of something out of 100.

Slide 4 - Diapositive

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Percentage Increase
Percentage increase is the amount of increase expressed as a percentage of the original value.

Slide 5 - Diapositive

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Calculating Percentage Increase
To calculate percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100.

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Percentage Decrease
Percentage decrease is the amount of decrease expressed as a percentage of the original value.

Slide 7 - Diapositive

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Calculating Percentage Decrease
To calculate percentage decrease, subtract the new value from the original value, divide by the original value, and multiply by 100.

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Interactive Practice
Solve the following problem: A shirt originally priced at $50 is now on sale for $40. What is the percentage decrease?

Slide 9 - Diapositive

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Summary
Percentage increase and decrease are useful concepts for understanding changes in values. Remember to use the correct formulas when calculating percentages.

Slide 10 - Diapositive

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Write down 3 things you learned in this lesson.

Slide 11 - Question ouverte

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.

Slide 12 - Question ouverte

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.

Slide 13 - Question ouverte

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.