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O-LevelMathematicsNumber4024/12 · Oct/Nov 2021 · Q72 Marks

By writing each number correct to 1 significant figure, estimate the value of 8230 × 0.64 18.7

  1. (a)By writing each number correct to 1 significant figure, estimate the value of 8230 × 0.64 18.7[2]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2021). The mark or mark type is shown in brackets.

  1. [2] 8000 and 0.6 and 20 seen as rounded values and final answer 240
  2. B1 for two of 8000, 0.6, 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 2021 Paper 1 Variant 2, question 7.

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