Calculations Involving Percentages

In this topic you will learn how to:

• carry out calculations involving percentages in appropriate contexts, e.g. compound interest, appreciation/depreciation
• round calculated values using significant figures

Class exercises: Int2 Unit 1 – Calculations Involving Percentages

Homework: Outcome 1.1 – Calculations Involving Percentages – due Thursday 13th June

If you have missed any of the topic or would like extra explanation and practice please look at these revision notes from the Maths4Scotland Int2 website:

Compound Interest

Appreciation/Depreciation and Reversing

Please comment below if you have any questions about the homework exercise or the topic.

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Percentage Calculations

New Topic: Percentage Calculations

By the end of this topic you will be able to:
Calculate percentages using decimal values (e.g. 70% = 0.7)
Calculate percentage increase/decrease
Apply a percentage increase/decrease repeatedly
Understand the terms profit/loss, appreciation/depreciation
Know the difference between simple interest and compound interest
Apply knowledge to solve problems in context

Percentages

Task 1:
Shaded Percentage Quiz
Start at Level A and show your teacher your score at the end of the level

Task 2a:
Match Decimals to Percentages
Click Start then choose “Decimals and percentages”
Task 2b:
Decimals & Percentages Quiz
Start at Level A and show your teacher your score at the end of the level

Task 3a:
Match Fractions to Percentages
Task 3b:
Fractions & Percentages Quiz
Start at Level A and show your teacher your score at the end of the level