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You use logarithms to find the power needed to make a number from a given base. This helps you work backwards from indices, simplify expressions, and solve exam questions quickly.
You should be comfortable with indices, powers, and basic multiplication and division. It also helps if you can simplify simple algebraic expressions.
One question from this skill's own question bank, shown with its full working.
log₁₀ 100 = ?
Working: 10² = 100, so log₁₀ 100 = 2.
In SHS 1 to SHS 3, this topic normally comes after work on indices and before more advanced algebraic ideas. It supports the kind of reasoning often tested in WASSCE mathematics questions.
Curriculum notes are a general guide to where this work normally sits. Always check the syllabus your school or examination body is currently using.
Other SHS Logarithms & Sequences skills in Maths, at the same point in the course.
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6 questions with a worked answer after every attempt, and a SmartScore that tracks how close you are to mastery.