40
The answer is 40
42 rounds down to 40.
It is: 42 rounded to the nearest whole number
When rounding 42 to the nearest whole number, you look at the digit in the tenths place, which is 2. Since 2 is less than 5, you round down. Therefore, 42 rounded to the nearest whole number is 42.
42
42
42
42.
It depends how round you want it.-- To the nearest 1/10th or to the nearest unit: 42-- To the nearest 10: 40-- To the nearest 100: Zero
42.0
40
42