NumberKey Facts

Key Percentage Conversions

Part of PercentagesGCSE Mathematics

This key facts covers Key Percentage Conversions 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 3 of 15 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 3 of 15

Practice

14 questions

Recall

22 flashcards

Key Percentage Conversions

Percentage Decimal Fraction In Words
100% 1.0 1 All/Whole
50% 0.5 1/2 Half
25% 0.25 1/4 Quarter
75% 0.75 3/4 Three quarters
10% 0.1 1/10 Tenth
1% 0.01 1/100 Hundredth

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.

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

What is a percentage?
Parts per hundred Percent = per cent = per 100 % symbol means 'out of 100' 50% = 50/100 = half
Percentage to decimal
Divide by 100 75% = 0.75 8% = 0.08 150% = 1.5 Move decimal point 2 places left

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