Mathematics for IGCSE & O level - Estimation (Section 2 - No. 48)
What is the value of 2.29465 to 2 d.p.?
2.29
2.30
2.31
2.20
解释
The digit in the third decimal place is 4, which is less than 5, so you leave the 9 as it is, therefore 2.30 is the result.