ECZ 2016 · O-Level Paper 1 — Approximations

The length of a wire is 5.2 cm, correct to 1 decimal place. What is its maximum possible length?

  • A. 5.3 cm
  • B. 5.15 cm
  • C. 5.2 cm
  • D. 5.25 cm

Verified working — step 1

"Correct to 1 decimal place" means the true length was rounded to the nearest 0.1 - so it can sit at most HALF of 0.1 above the stated value.

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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