iGCSE Mathematics (0580) :E1.9 Make estimates of numbers, quantities and lengths. iGCSE Style Questions Paper 2 iGCSE PhysicsiGCSE MathsiGCSE ChemistryiGCSE Biology IGCSE Mathematics(0580) Practice Questions Paper 2 - All Chapters Question By writing each number correct to 1 significant figure, find an estimate for the value of \(\frac{2.8\times 82.6}{27.8-13.9}\) ▶️ Answer/Explanation Answer: 12 Round numbers: 2.8→3, 82.6→80, 27.8→30, 13.9→10. Calculation: (3×80)/(30-10) = 240/20 = 12. More IGCSE Mathematics(0580) Practice Questions Paper 2 ........
