## Reverse Percentages – Using a Bar Model (A) worksheet

Suitable for Year groups: 9, 10
GCSE Tier:
Foundation/Higher
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Prerequisite knowledge: Using bar models to find percentages of amounts.
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## Reverse Percentages – Using a Bar Model (A) worksheet description

This worksheet provides an excellent introduction to finding the original amount when given a percentage of it. Bar models provide a visual tool for understanding percentages and help bridge the gap between concrete, pictorial, and abstract concepts.

Pupils are firstly given a bar model depicting 20% = 64 and are asked to consider what other percentages they can find using this fact. We have included prompts of multiples of 20% up to 100, 10%, 5% and 1%.

Section B consists of 9 increasingly difficult questions with a decreasing level of scaffolding provided.

All the percentages of the original given are less than 100%. See Reverse Percentages - Using a Bar Model (B) to work with percentages over 100%.

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