Percentage of a number
What percentage of a number means
You learn how to find part of a whole amount when a percentage is given. This helps you answer money, data and everyday sharing questions more quickly.
What you will practise
- Find 50% of an amount by halving it.
- Find 10% of a number by dividing by 10.
- Find 25% of an amount by dividing by 4.
- Work out other simple percentages from given numbers.
Before you start
You should be comfortable with multiplication, division and fractions of amounts. It also helps to know how to convert simple percentages into halves, quarters and tenths.
Worked example
One question from this skill's own question bank, shown with its full working.
What is 50% of 80?
Working: 50% is half: 80 ÷ 2 = 40.
Common mistakes to avoid
- Forgetting that 50% means half, not 50 added to the number.
- Dividing by the wrong number when finding 10% or 25%.
- Using the percentage as the answer instead of the amount it represents.
- Missing the relationship between fractions, decimals and percentages.
Curriculum and exam alignment
This topic normally appears in the percentages section of Junior High School mathematics in Ghana, where learners build skills for solving everyday problems. It supports BECE preparation by training you to handle percentage questions accurately and quickly.
Curriculum notes are a general guide to where this work normally sits. Always check the syllabus your school or examination body is currently using.
Related skills
Other Percentages skills in Maths, at the same point in the course.
Other Maths topics
Related study guides
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Exams that assess percentage of a number
Junior High work on this skill feeds directly into these exam papers. Each page lists the Maths topics that appear on it.
How this page was produced
This text was drafted with AI assistance from the questions and topics already stored on the platform. A subject-specialist review is scheduled but has not yet been recorded, so we do not claim it here.
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Practise percentage of a number
8 questions with a worked answer after every attempt, and a SmartScore that tracks how close you are to mastery.
