Question

Round off the number 425.68 to Tenths (1 decimal place), Hundredths (2 decimal place) and to Tens place?

(a) 425.6, 425.68, 426

(b) 425.7, 425.68, 430

(c) 425.5, 426.78, 425

(d) 425.7, 4257, 430

The question was asked by my college director while I was bunking the class.

My question comes from Errors in Data and Calculations topic in section Presentation and Analysis of Data of Bioprocess Engineering

Answer 1

Right choice is (b) 425.7, 425.68, 430

Explanation: In the Tenths (1 decimal place), we will take 68 as a digit after the decimal and round off it to the multiple of ten as 70, In the hundredths (2 decimal place), we will take both 68 as a number after  the decimal because we have to take 2 decimal places and 6,8 both numbers are greater than 5, In the Tens place, we will round the number before the decimal place to the closest multiple of ten, i.e. 430.