◈ Oracle PrepSign Up Free
O-LevelMathematicsNumber4024/11 · Oct/Nov 2020 · Q93 Marks

Express 0.043×100² in standard form.

  1. (a)Express 0.043×100² in standard form.[1]
  2. (b)Evaluate 1.2×10⁷ / 2×10⁻³, giving your answer in standard form.[2]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2020). The mark or mark type is shown in brackets.

  1. [1] 4.3 × 10² cao
  2. [2] 6 × 10⁹ cao
  3. B1 for 0.6 × 10¹⁰; or for 6 000 000 000 seen or for final answer A × 10ⁿ with 1 ≤ A < 10

Write your answer and get it marked

On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.

Sign up free →

About this question

Topic
Number, O-Level Mathematics (syllabus 4024). Structured question, 3 marks.
Source
O-Level Mathematics, Oct/Nov 2020 Paper 1 Variant 1, question 9.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

Related Mathematics questions

NumberMay/June 20141m

The ratio of boys to girls in a class is 4 : 5. There are 3 more girls than boys. Calculate the total number of stude…

NumberMay/June 20141m

By writing each number correct to one significant figure, estimate the value of (28.6 + 47.7) / (0.47 x 21.4).

NumberMay/June 20141m

Write 8/25 as a decimal.

Algebra and graphsMay/June 20141m

Make a the subject of the formula y = (a-4)/(3-a).

Algebra and graphsMay/June 20141m

Here are the first four terms of a sequence: 7, 11, 15, 19. Write down an expression, in terms of n, for the nth term…

Algebra and graphsMay/June 20141m

u_n is the nth term of another sequence. Here is the formula connecting the nth and (n + 1)th terms of this sequence:…

← Browse all past-paper questions

© 2026 Oracle Prep