A number with no decimals is called a whole number, or an integer.
It is 2.455
7
Two.
81.176Rounding 81.1763 to three decimals, look at the digit just to the right of 6.Since the digit is less than 5, do not change the rounding digit which is 6, but drop all digits to the right of it, thus drop 3. Therefore, the answer is 81.176But just in case that digit is greater than or equal to five, add one to the rounding digit and drop all digits to the right of it.Example: round 81.1765 to three decimals, the answer is 81.177.
Excluding decimals: 995
Pi is not a digit because it has decimals. I believe a digit is a round digit meaning a whole number and no decimals.
A space (or blank) after the last digit!
It is 2.455
Two of them.
It is the third digit after the decimal point.
7
Two.
102345678 If you allow decimals: 0.12345678 If you allow negative numbers: -987654321
81.176Rounding 81.1763 to three decimals, look at the digit just to the right of 6.Since the digit is less than 5, do not change the rounding digit which is 6, but drop all digits to the right of it, thus drop 3. Therefore, the answer is 81.176But just in case that digit is greater than or equal to five, add one to the rounding digit and drop all digits to the right of it.Example: round 81.1765 to three decimals, the answer is 81.177.
seven thousandths
Excluding decimals: 995
Write them as decimals, and compare. If the first digit of two numbers is equal, compare the second digit; if the second digit is equal, compare the third digit, etc.