Free November promotion: everything is free until 30 November 2026 — every subject, unlimited practice.

Approximation, scientific notation and error

Round to significant figures, use scientific notation and calculate percentage error and bounds.

In review 5th Year6th Year HigherOrdinaryFoundation
15practice questions

Multiple choice: 6 · Numeric answer: 9

Each question has up to three hints, a worked explanation, and is tracked in your progress and review plan.

Practise this topic

Try a question

Numeric answerPaper 1 – Number
The true value of a quantity is 91 and an estimate is 100. Find the absolute error.
Whole numbers, decimals (2.5) or fractions (3/4).
Hint 1

Error = |true value − estimate|.

Create a free account to save your progress.