5.36201 rounded to the first decimal place will be 5.4
this is because there is a general rule that numbers from 5 to 9 are rounded up to the next highest number. thus we need to look at the first 2 decimal places, 5.36
6 is higher than five, so it will be rounded up to 10. you cannot have a double digit number in a single decimal place, so you carry it over to the next one to the left, in this case being 3. 3 + 1 = 4, and hence we attain 5.4