Number 5
2 marks · EasyCalculate (3.2 × 10^4) + (6.8 × 10^3), giving your answer in standard form.
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3.88 × 10^4 (±100)
Also accept: 3.88 × 10^4; 3.88 x 10^4
Common mistakes: 9.0 × 10^3; 9.01 × 10^3; Incorrect index usage
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Marking points
M1 · 1 mark · Write both numbers with the same index.
A1 · 1 mark · Correct answer in standard form: 3.88 × 10^4. (follow-through)
Worked solution