Use the next column to the right of the tenths column to decide whether to round up of down: if it is 5 or more round up, otherwise round down.
The tenths digit is the first after the decimal point, so the hundredths is the second after the decimal point. It is a 3 which is not 5 or more, so round down:
1.13 → 1.1 to the nearest tenth.
15.386 to the nearest tenths place is 15.4
0.786 to the nearest tenths place is 0.8
5.218 to the nearest tenths place is 5.2
9.072 to the nearest tenths place = 9.1
39.96 to the nearest tenths place is 40.0
The square roots are +/- 10.6
98.76 to the nearest tenths place is 98.8
15.402 to the nearest tenths place is 15.4
5.58 to the nearest tenths place = 5.6
5.197 to the nearest tenths place = 5.2
3.29 to the nearest tenths place = 3.3
15.386 to the nearest tenths place is 15.4
0.786 to the nearest tenths place is 0.8
5.218 to the nearest tenths place is 5.2
9.072 to the nearest tenths place = 9.1
39.96 to the nearest tenths place is 40.0
17.25 to the nearest tenths place = 17.3