Number 8
2 marks · HardA piece of string is 1.85 metres long. Write this length in millimetres, giving your answer in standard form.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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1.85 × 10^3 mm or 1850 mm (±1)
Also accept: 1.85 × 10^3 mm; 1.85x10³ mm; 1850 mm
Common mistakes: Giving answer as 0.00185 mm (incorrect conversion)
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Marking points
M1 · 1 mark · Multiplies 1.85 by 1000 or gives a correct conversion factor.
A1 · 1 mark · Writes the answer as 1850 mm or 1.85 × 10³ mm in standard form.
Worked solution
1 metre = 1000 millimetres, so:
Expressing this in standard form: