1.28 Percentage Multipliers GCSE PowerPoint Lesson

In this 35-slide lesson, students will explore how to convert percentage changes into decimal multipliers. For example, increasing a value by 38% means multiplying by 1.38, while decreasing by 15% means multiplying by 0.85. The percentage multipliers are used to calculate percentages of amounts, percentage increases and percentage decreases efficiently.

This method is particularly useful for real-life applications such as sales, interest rates, and population growth/decline, which is explored in later percentage lessons. Practice tasks include both numerical calculations and applied worded problems.

Note this is 4 out of 9 lessons on percentages.

The lesson includes:

• Clear, guided examples

• Discussion opportunities from Think, Pair, Share

• Mini whiteboard section to check understanding and clarify misconceptions

• Three structured tasks to practise key skills

• Challenge activity to extend and deepen learning

Perfect for engaging learners while reinforcing essential numeracy concepts.