When rounding a decimal number to the nearest whole number, you look at the first decimal place. If it is 5 or greater, you round up; if it is less than 5, you round down. In this case, 8.4 has a tenths place value of 4, which is less than 5. Therefore, when rounded to the nearest whole number, 8.4 becomes 8.
83.7326 rounded to the nearest whole number is 84
0.46 x 84 = 38.64 Rounded to 39
It is: 335/4 = 83.75 which can be rounded to 84 as a whole number
100
100