Definition. A number is some an value, which can be written by a word, symbol, or figure, representing a quantity and used in calculations and counting.

Two apples, five spoons, ten books, one hundred rubles, seven tulips. Every day we turn to numbers sometimes without even noticing it.

In the early days, when people were taught to read and calculate, the number of objects was represented by sticks:

  • One item was represented as |
  • Two objects as | |
  • Three objects as | | |
  • Four objects as | | | |
  • Five objects as | | | | |

As people became more literate, they realized that a large number of objects could not be represented by sticks, so they replaced the sticks with numbers.

Today in mathematics, digits are used to represent numbers - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

Numbers scare away most of schoolchildren and students because they are associated with mathematics and "scary formulas". In fact, there's nothing scary about it. Numbers are simply a set of symbols that are meant to represent numbers. Simply put, to denote the number of items.

That's all there is to it. This introduction in numbers is over. We will study it much better in the future, but for now, this lesson is over.


+7 #1 Bob 2020-12-26 11:44
For a long time I was looking for something similar to this site. Other sites did not suit me because of the format of the video or rather complicated explanations. Here everything is simple and clear, thank you)

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