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O-LevelMathematicsNumber4024/12 · Oct/Nov 2022 · Q92 Marks

By writing each number correct to 1 significant figure, estimate the value of 47.5+36.1 64.9÷17.7

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2022). The mark or mark type is shown in brackets.

  1. [2] 50 and 40 and 60 and 20 seen as rounded values and final answer 30
  2. B1 for three of 50, 40, 60 or 20 seen as rounded values

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About this question

Topic
Number, O-Level Mathematics (syllabus 4024). Structured question, 2 marks.
Source
O-Level Mathematics, Oct/Nov 2022 Paper 1 Variant 2, question 9.

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