Any element can be represented numerically as a unit , more specifically with the number 1. If we divide this unit into 10 parts, each of them will be the tenth part or a decimal number, of which we can represent numerically as 0.1. So if we multiply 0.1 by 10 we have one unit. In other words, the decimal number is a value that is related between 0 and 1. This means that all numbers that are to the right of the 0 followed by a dot represent a quantity less than one and those numbers represent the part. decimal. In this way, we have the whole numbers (1, 2, 3…) and the decimal numbers (0.1; 0.2; 0.3…). Decimal Number
Decimal numbers express a part of something (may also be called a fraction) and that part can be counted in any mathematical operation. Thus, if we have a whole pie and three more portions of another one, we will express this reality numerically through the following result: 1+0.3 = 1.3.
Why are they called decimal numbers, how are they read and when are they used?
As its name implies, these numbers refer to the number 10, as decimal numbers are based on that same number. In this way, if a tenth of 1 is 0.1; the tenth of a tenth would be 0.00l and so on. As we can see, tenth numbers are very important, as they allow them to be used in small quantities. Decimal Number
When I say I have 0.1 of something corresponds to a tenth, so 0.01 indicates a hundredth and 0.001 would be a thousandth
To read a decimal number we indicate in the first place the whole piece and then the decimal (for example, the number 35 287 the integer part is 35 and the decimal is 287, in this case, the decimal portion represents an integer divided into 1000 parts of which we account for 287 parts). Normally, reading decimal numbers that have a zero in the integer part is not mentioned (for example, 0.0015 equals fifteen thousandths).
When measuring the size of something very large, we use the meter as a unit (for example, the Earth’s circumference reaches approximately 40 million meters). However, when measuring something small, decimal numbers are very useful too (for example, a fly measures 0.003 meters or three millimeters). Decimal Number
We use decimal numbers quite often, especially to determine amounts of money, small units of weight, time, or distance.