how to write an introduction for school project on the on the topic review of number of maths
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Step-by-step explanation:
Review of numbers
Number system is a writing system for expressing number. Typically used to count numbers, measure temperature, find area of an object, and numerically represent any data.
Numbers can be as following
1.Natural Numbers
Natural numbers – or the counting numbers – are probably the first type of numbers you will have come across. The Natural numbers are whole numbers greater than zero. These numbers are 1, 2, 3, 4, …, numbers that you can physically count. The Natural Numbers do not include negative values. For these we need another group.
2.Integers
Integers are whole numbers, both negative and positive, including zero. These numbers are …, -3, -2, -1, 0, 1, 2, 3, …. Positive integers are integers greater than zero, and negative integers, not surprisingly, are integers less than zero.
3.Rational Numbers
Rational number are numbers that can be written as a fraction where both the numerator and denominator are integers. This means that both the top and bottom of the fraction are whole numbers. Examples of these would be 1/3} and 23/7
4. Irrational Numbers
Irrational Numbers are numbers that can’t be written as fractions, examples of these are ones such as \pi and \sqrt{2}. If we try to write these numbers as decimals they go on forever, with no recurring digits.
5.Square Numbers
Square Numbers are integers that can be written as the square of some other integers, ie. a product of an integer multiplied by itself. Examples of these are 4, (2×2) and 81, (9×9). Square Numbers can also be written in the form 5^2. This notation means 5 squared, which is 25.
6.Prime Numbers
Prime numbers are numbers greater than 1 that can only be divided by themselves and 1 to give an integer answer. Example of these are 2, 3, 5, 7, 11, 13, 17, …. Note that 2 is the first and only even prime number.
7.Real Numbers
Real numbers are all the numbers that you have ever come across, all of the rational and irrational numbers. All of these real numbers can be written in a finite or infinite decimal form, such as √2 = 1.414213562… and π = 3.141592654...........