NumberStudy Notes

Worked Example 3: Percentage Increase

Part of Percentages · GCSE GCSE Mathematics revision

This study notes covers Worked Example 3: Percentage Increase within Percentages for GCSE Mathematics. Revise Percentages in Number for GCSE Mathematics with 14 exam-style questions and 22 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 10 of 16 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 10 of 16

Practice

14 questions

Recall

22 flashcards

Worked Example 3: Percentage Increase

A phone costs £450. The price increases by 8%. What is the new price?

Solution

Method: Multiplier

100% + 8% = 108% = 1.08

New price = 450 × 1.08

= £486

Keep building this topic

Read this section alongside the surrounding pages in Percentages. That gives you the full topic sequence instead of a single isolated revision point.

Worked Example 2: Expressing as Percentage Worked Example 4: Reverse Percentage Parts per Hundred What Are Percentages?

Practice Questions for Percentages

Which calculation correctly finds 35% of £240 using the decimal method?

A. 240 ÷ 35
B. 240 × 3.5
C. 240 × 0.35
D. 35 ÷ 240

1 markfoundation

Which formula correctly expresses one quantity as a percentage of another?

A. (part ÷ whole) × 100
B. (whole ÷ part) × 100
C. (part × whole) ÷ 100
D. (whole − part) × 100

1 markfoundation

Quick Recall Flashcards

Percentage to decimal

Divide by 100 75% = 0.75 8% = 0.08 150% = 1.5 Move decimal point 2 places left

What is a percentage?

Parts per hundred Percent = per cent = per 100 % symbol means 'out of 100' 50% = 50/100 = half

14 questions on Percentages — practise free

Instant marking, adaptive difficulty, and 22 spaced repetition flashcards. Free until your GCSEs.

Try PrepWise Free

Worked Example 2: Expressing as Percentage

Worked Example 4: Reverse Percentage