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How do I write 108 as a decimal?
Decimals are used to describe parts of a number, something in between two whole numbers. Tenths, halves, eights etc. But 108 is only whole numbers, so there's nothing there to use a decimal for.
Where did complex and imaginary numbers come from?
The 16th century Italian mathematician, Gerolamo Cardano was the first to use imaginary and complex numbers in his work on cubic equations.
How do you change decimals to fractions or mixed numbers?
Let's say you have a decimal number that has a 0 at the left of the decimal point, (like 0.057), and you want to change it into a fraction. First take all the numbers to right of the decimal point (in this case 57, you can drop the leading 0's) and that will be your numerator (the "top" part of your fraction). For the denominator ("bottom" part) of your fraction, use a 1 followed by the same number of 0's as their are digits after the decimal point (in this case 3 -- here you must count the leading 0!). So 0.057 would be 57/1000 as a fraction. Decimal numbers that have numbers other than 0 the the left of the decimal point can be converted into mixed numbers. Just use the numbers the the left for the integer part of the number, and the same procedure as above to convert to a fraction part. Best explained as an example: 2305.0994 is the same as 2305 994/10000.
What is A is a symbol used to separate the ones place from the tenths place in decimal numbers?
It is a point (or full stop) in most countries although quite a few use a comma as the separator.
What are the real numbers that is not a whole number?
Real numbers are all numbers which do not contain "i", when "i" represents the square root of -1. All numbers which do contain "i" are "imaginary numbers" and are not real numbers. This means that all numbers you'd ordinarily use are real numbers - all the counting numbers (integers) and all decimals are real numbers. So in answer to your question, all the real numbers that are not whole numbers are all the decimal numbers - including irrational decimals such as pi.
