Number 5

2 marks · Normal

Calculate . Give your answer correct to 3 significant figures.

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8.31 (±0.01)

Also accept: 8.3

Common mistakes: Adding before dividing (not following BIDMAS)

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Marking points

M1 · 1 mark · Correctly follows the order of operations: divides 9.34 by 2.7 then adds 4.85.

A1 · 1 mark · Final answer given correct to 3 significant figures.

Worked solution

Step 1: Calculate 9.34 \div 2.7 = 3.459... Step 2: Add 4.85 + 3.459... = 8.309... Step 3: Round answer to 3 significant figures: 8.31.