287 rounded to the first digit (ones) is 287.
12385.3333
23.1
27.60 rounded to one decimal place is 27.6. The first digit to the right of the . is the tenth.
The 42nd digit of pi is 6. (The first 43 digits of pi are 3.141592653589793238462643383279502884197169. If pi were rounded to the nearest 42 digits, then the 6 would be rounded up to a seven.)
3.0
16 is rounded to 20 if rounded to the ten's digit.
51111 is the smallest five digit number that can be rounded to 60000
9000000 if it's the first 9 9334209 if it's the second 9
94 is the greatest two-digit whole number that when rounded to the nearest ten rounds to a two-digit number.
Look at the first digit after the decimal point. It is an 8, which means the number will be rounded up. So it would be rounded up to 10.
2,380