This deep dive covers Method: Percentage Conversions within FDP Conversions for GCSE Mathematics. Revise FDP Conversions in Number for GCSE Mathematics with 12 exam-style questions and 22 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 6 of 15 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Method: Percentage Conversions
D→P
Decimal to Percent: ×100 (move point 2 right)
P→D
Percent to Decimal: ÷100 (move point 2 left)
F→P
Fraction to Percent: Convert to decimal first, then ×100
P→F
Percent to Fraction: Write over 100, then simplify
Practice questions for FDP Conversions
Which decimal is equal to 3/4?
Explain why 1/3 cannot be written as an exact decimal, and write 1/3 using correct notation for recurring decimals.
Quick recall flashcards
Halves family
1/2 = 0.5 = 50%
Must know instantly!
FDP Triangle
F (top)
D (left) ← → P (right)
F→D: divide
F→P: ×100
D→P: ×100