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Interest and Depreciation Calculations•
Percentages

Compound Interest WORKSHEET

Suitable for Year groups: Year 10, Year 11
GCSE Tier: Foundation/Higher
Targeting grades: 4-5
Prerequisite knowledge: Students should be able to convert percentages and fractions to decimals. Students should understand the use of multipliers to find, increase or decrease with percentages.
Learning Objective: Finding new amounts and the cnage after repeated percentage change

Compound Interest WORKSHEET DESCRIPTION

This worksheet helps students grasp the concept of compound interest.

Section A leads students through calculating the value of two investments after each year. It requires them to show the calculation used for each step to consolidate the skill. It then asks students to write the formula for the final amount and adapt that formula for just finding the amount of interest – this is an essential aspect of the topic as the wording of exam questions can be tricky for students to understand.

Section B then asks students to find the final amounts of investments given an initial amount, interest rate and several years. Section C has some worded questions, including recognising the graph representing compound interest and some involving depreciation.

All worksheets are created by the team of experienced teachers at Cazoom Maths.

Compound Interest worksheet created for students in Year 10 and Year 11

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Frequently Asked Questions

Students should be comfortable converting percentages and fractions to decimals, as this forms the foundation for calculating compound interest multipliers. They also need to understand how to use multipliers to find percentage increases or decreases, since compound interest involves applying these multipliers repeatedly over multiple time periods.