To round a number to the nearest tenth we have to look at the second digit after the decimal point.
If it is greater than 5 we have to add 1 unit to the place of the tenths, if not it remains the same.
B. 9.37 and 9.42
9.37, the second digit after the decimal point is 7.
7>5, so we have to add 1 to the tenths.
9.4
9.42. the second digit after the decimal point is 2.
2<5
The tenths place remains the same:
9.4
