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O-LevelMathematicsNumber4024/11 · May/June 2017 · Q144 Marks

Write 0.000 186 in standard form.

  1. (a)Write 0.000 186 in standard form.[1]
  2. (b)(i)Given s = 1.3 x 10⁷ and t = 8 x 10⁸. Giving each answer in standard form, find t²,[1]
  3. (b)(ii)Given s = 1.3 x 10⁷ and t = 8 x 10⁸. Giving each answer in standard form, find t-s.[2]

Mark scheme

Marking points from the official mark scheme (May/June 2017). The mark or mark type is shown in brackets.

  1. [1] 1.86 × 10⁻⁴
  2. [1] 6.4 x 10¹⁷
  3. [2] 7.87 x 10⁸ B1 for figs 787 seen

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About this question

Topic
Number, O-Level Mathematics (syllabus 4024). Structured question, 4 marks.
Source
O-Level Mathematics, May/June 2017 Paper 1 Variant 1, question 14.

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