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O-LevelMathematicsNumber4024/12 · Oct/Nov 2023 · Q102 Marks

By writing each number correct to 1 significant figure, estimate the value of √(1240×3.8)/11.2

  1. By writing each number correct to 1 significant figure, estimate the value of √(1240×3.8)/11.2[2]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2023). The mark or mark type is shown in brackets.

  1. [2] 1000 and 4 and 10 seen as rounded values
  2. and final answer 20
  3. B1 for two of 1000, 4 or 10 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 2023 Paper 1 Variant 2, question 10.

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