Whole numbers are not enough to describe everything. For example, the length of a certain object - say, a table - may not be an exact number of meters - it may be more than one but less than two meters.
We count in tens because we have ten fingers. 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.
It has the . because without it you would get a good grade instead of a bad one looking for your answers online... stupid! Naughty, naughty student!
In order to convert decimals into percentages In order to convert decimals into fractions To distinguish irrational numbers from rational numbers
The importance of lining up the decimals is so you can just add from bottom to top it makes things a lot easier.
Decimals are very important in the everyday use of numbers. It would be very difficult to make calculations, especially of money. without having the larger and smaller units separated by decimal points.
it help us understand the importance of nature to each one of us.
the importance is they keep us away from harm
terminating decimals and repeating decimals
There are many situations where integers are simply not enough. However, "real numbers" are mainly of theoretical importance; for most practical situations, numbers that have a limited number of decimals work quite well.
It is the basic law of attraction in humans. The person whom we give importance won't come after us but vice versa.
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They provide Oxygen and food for us.
beautify environment
Two of them are terminating decimals and recurring decimals