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ZIMSEC O-Level Mathematics

1.4Ordinary and standard form

Ordinary and standard form in ZIMSEC O-Level Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
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Learning objectives

What the syllabus expects you to be able to do.

  1. 1.4.1Write numbers in standard form A × 10ⁿ, where 1 ≤ A < 10 and n is an integer, and convert them to ordinary form.
  2. 1.4.2Add, subtract, multiply and divide numbers in standard form.

Lessons

  • Standard form

    30 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Ordinary and standard form: sample question

1 mark

Write 5.07×10−45.07 \times 10^{-4} as an ordinary number.

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