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ZIMSEC O-Level Mathematics

1.5Number bases

Number bases in ZIMSEC O-Level Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic20 practice questions1 lesson

Learning objectives

What the syllabus expects you to be able to do.

  1. 1.5.1State the place value of digits in numbers written in bases two to ten.
  2. 1.5.2Convert numbers from one base to another.
  3. 1.5.3Add and subtract numbers in bases other than ten.

Lessons

  • Number bases

    35 min

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Sample question

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

Number bases: sample question

1 mark

Convert 101121011_2 to base ten.

Only if the answer has a unit, e.g. cm or km/h.

Turn Number bases into a strength.

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