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.
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.
The infinitely many multiples of 515: 515*1, 515*2, 515*3 etc.
515= 515 * 100%= 51500%
The general factors of 515 are : 515, 103, 5 and 1. The prime factors of 515 are 5 and 103.
The positive integer factors of 515 are: 1, 5, 103, 515
1,5,103 and 515
515 5,103
7divide by 515 = 0.013592233009708738
5.15 is, itself, 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. Its equivalent, in rational form, is 515/100. You can simplify this rational fraction if you so wish.
1, 5, 103, 515
9004 - 515 = 8489