Mathematics for IGCSE & O level - Estimation (Section 3 - No. 22)
When rounding 8.478 to 1 d.p., what is the result?
8.4
8.5
8.6
8.7
คำอธิบาย
When rounding to 1 d.p., the second digit after the point needs to be checked. So in this case, 7 is checked and therefore, it becomes 8.5.