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Finding the Original WORKSHEET

Suitable for Year groups: Year 9, Year 10

GCSE Tier: Foundation/Higher

Targeting grades: 4-5

Prerequisite knowledge: Students would benefit of knowledge of ratios in the form 1:n and equivalent ratios. Students should be able to perform division and multiplication witout a calculator using written methods.

Finding the Original WORKSHEET DESCRIPTION

This worksheet targets the topic of Reverse Percentages. It provides excellent practice questions covering how this topic could be phrased in an examination setting.

Section A requires students to complete a table stating what 100% should be based on a given percentage's value. It doesn’t lead students through a fixed method allowing them to get to their solutions using whichever method they prefer or has been taught.

Section B then asks them to find the original amounts after some percentage increases and decreases. The table limits the variety of percentage changes to give students time to practice the skill and build confidence.

Finally, Section C has many worded contextual problems mixing up increases and decreases. These questions are written in the style of exam questions to give excellent preparation for GCSE Mathematics.

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