Question

round.53768 to one decimal place. *
.54
.53
.5
.6

Explanation:

Step1: Identify target decimal place

The target is the 1st decimal place: $0.5$ (digit: 5)

Step2: Check next digit for rounding

The digit after is 3 (2nd decimal place: $0.03$), which is $<5$.

Step3: Keep target digit unchanged

Drop all digits after the 1st decimal place.

Answer:

.5