4MA1/2HR Jun 2025, Question 2: Prime Factorization
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2HR (Higher) · Calculator · 3 marks
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The question, in short
Express 1400 as a multiplication of prime factors written with exponents, and display the method used to obtain it.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 3 marks
- 11400 = 2 × 700
- 2700 = 2 × 350
- 3350 = 2 × 175
- 4175 = 5 × 35 = 5 × 5 × 7
- 51400 = 2 × 2 × 2 × 5 × 5 × 7
- 6= 2³ × 5² × 7
Answer2³ × 5² × 7
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