Mathematics 0580 · IGCSE · Estimation

Estimation — practice question

After rounding each number in the calculation to 1 significant figure,
(main)[2]

Work out an estimate for the value of $\frac{27 - 2.3^2}{845.4 \times 0.048}$.

Worked solution & mark scheme

This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Working: $\dfrac{30 - 2^{2}}{800 \times 0.05}$” …

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI