Fractions of amounts, percentages built from 10%, 5% and 1%, and moving between fractions, decimals and percentages without a calculator.
What you will learn
- Find a fraction of an amount
- Build a percentage from 10%, 5%, 2.5% and 1%
- Convert between fractions, decimals and percentages
- Compare and order them
- Increase and decrease by a percentage
A fraction of an amount
Divide by the bottom number, then multiply by the top number.
- 3/8 of 240 g
- 240 ÷ 8 = 30
- 30 × 3 = 90 g
The rest of this lesson and its 8 practice questions are locked.
In this lesson
- A fraction of an amount
- Building a percentage
- Fractions, decimals and percentages
- Try it: Learn a few by heart
8 practice questions, marked as you go; about 25 minutes in all.
Key terms
Simplest form
In this unit: Non-calculator methods
Everything Paper 1 asks you to do by hand: written multiplication and division, fractions and percentages, estimating and checking, exact answers, and multi-step problems without a calculator.
- Written multiplication and division
- Fractions and percentages by hand
- Estimating and checking
- Exact answers
- Non-calculator problem solving