287 rounded to the first digit (ones) is 287.
300
23.1
300
9000000 if it's the first 9 9334209 if it's the second 9
When rounding 963 to one significant figure, we look at the first digit, which is 9. The next digit is 6, which is 5 or greater, so we round up. Therefore, 963 rounded to one significant figure is 1000.
74,312 is already rounded to the first digit (ones).
300
300
290
In the number 287, the digit 2 is in the tens place. This means that the value of the digit 2 is 20, as it represents 20 tens. In the number 287, the digit 2 contributes to the overall value of 20.
5.5296
23.1
0
290
To round 54.247 to the nearest underline digit, we first identify the digit to be rounded to, which is the 4 in the hundredths place. Since the digit to the right of 4 is 7, which is equal to or greater than 5, we round the 4 up to 5. Therefore, 54.247 rounded to the nearest underline digit is 54.25.
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.)