This deep dive covers Method: Decimal to Fraction 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 5 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: Decimal to Fraction
1
Count decimal places
2
Write over power of 10 (10, 100, 1000...)
3
0.45 = 45/100 (2 decimal places)
4
Simplify: 45/100 = 9/20
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
FDP Triangle
F (top)
D (left) ← → P (right)
F→D: divide
F→P: ×100
D→P: ×100
Halves family
1/2 = 0.5 = 50%
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