20
A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. A decimal representation does not require a decimal point. So the required decimal representation is 515, exactly as in the question.
515 is an integer and so there is not really a sensible way of writing it as a fraction or mixed number.
It is a composite number.
5.15 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. And, being a decimal, there is no simpler form. Its rational equivalent is 515/100 which can be simplified to 5 3/20.
The number 5.15 has 2 spaces past the decimal (5.15). Therefore multiply it by 10^2 power, or 100. Then take that number, (515) and put it over the number you multiplied it by (100). You get 515/100 or 5 15/100 or 5 3/20
515 is closest to 500.
There are 1760 yards in one mile. Therefore, rounded to two decimal places, 515 yards is equal to 515/1760 = 0.29 miles.
There are 1.609344 kilometres in one mile. Therefore, rounded to two decimal places, 515 kilometres is equal to 515/1.609344 = 320.01 miles.
515 is an integer and not a fraction. However, it can be expressed in rational form as 515/1 which cannot be simplified.
The prime factors of 515 are 5 and 103.
No.
To find 20 percent of a number, multiply the number by 0.2. In this instance, 0.2 x 515 = 103. Therefore, 20 percent of 515 is equal to 103.