Hub: IGCSE maths past papers — Cambridge & Edexcel.

Bounds and significant figures punish careless rounding. Past papers teach upper/lower bound language examiners expect.

Practice checklist

Topic	Past paper focus
SF and DP	First 10 questions on many papers
Error intervals	Show inequality notation
Calculations with bounds	Do not round early

Hub: maths past papers · Number topic

Frequently asked questions

Bounds on Foundation?

Check your board tier — some topics are Higher-only on Edexcel.

Calculator bounds?

Store full calculator value; round only at end per question instruction.

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