ECZ 2015 · O-Level Paper 1 — Index Notation
A road construction company needed a sum of 0.04455 billion kwacha (1 billion = 1 000 000 000) to rehabilitate bridges on a road. Write 0.04455 billion in standard form correct to 2 significant figures.
- A. 4.5 × 10⁷
- B. 4.4 × 10⁷
- C. 4.5 × 10⁸
- D. 45 × 10⁶
Verified working — step 1
0.04455 billion = 0.04455 × 10⁹ = …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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