When rounding a decimal number to a whole number, you look at the digit immediately to the right of the decimal point. If it is 5 or greater, you round up; if it is less than 5, you round down. In this case, 40.5 has a 5 in the tenths place, so it rounds up to 41 as a whole number.
It can be rounded from 0.7 to 1 as a whole number
Rounded to the nearest whole number, it is 10.
It is then 18 when rounded to the nearest whole number
It is 310 when rounded to the nearest whole number
It is 63 rounded to the nearest whole number
1.471 rounded to a whole number is 1
It can be rounded from 0.7 to 1 as a whole number
Rounded to the nearest whole number, it is 10.
It is then 18 when rounded to the nearest whole number
It is 2 when rounded to the nearest whole number
It is 310 when rounded to the nearest whole number
9.12 rounded to a whole number is 9.
It is then 14 when rounded to the nearest whole number
503.8 rounded to the nearest whole number is 504
8.34 rounded to the nearest whole number = 8
5.18742 rounded to the nearest whole number is 5.
3.083 rounded to a whole number is just 3