0580/12 Feb/Mar 2022, Question 6: Written Methods of Multiplication
Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 2 marks
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The question, in short
Apply Edha's method, rewriting 99 × 68 as 100 × 68 minus 68, to calculate the result without a calculator.
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Solution · 2 marks
- 199 × 68 = 100 × 68 − 68
- 2= 6800 − 68
- 3= 6732
Answer100 × 68 − 68 = 6800 − 68 = 6732
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