4MA1/1FR Jun 2022, Question 8: Written Methods of Multiplication
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1FR (Foundation) · Calculator · 2 marks
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The question, in short
Using the given fact that 13 203 ÷ 27 = 489, explain a method to calculate 489 × 28 without direct multiplication.
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Solution · 2 marks
- 113 203 ÷ 27 = 489, so 489 × 27 = 13 203
- 2489 × 28 = 489 × (27 + 1) = 489 × 27 + 489
- 313 203 + 489 = 13 692
- 4so she can add 489 to 13 203
Answeradd 489 to 13 203
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