Showing posts with label Rational numbers. Show all posts
Showing posts with label Rational numbers. Show all posts

Tuesday, April 16, 2013

Learn Numbers for Kids

Learn numbers for kids –Introduction:

A number is a mathematical object used in counting and measuring. A notational symbol which represents a number is called a numeral, but in common usage the word number is used for both the abstract object and the symbol, as well as for the word for the number. In addition to their use in counting and measuring, numerals are often used for labels. (Source Wiki)



Learn numbers for kids – Types:


Natural numbers

Integers

Rational numbers

Real numbers

Complex numbers

Computable numbers

Natural Numbers:

The natural Numbers are the numbers. This is the most common numbers are the natural numbers.

That is: one, two, three, four, …..n this is the natural numbers

Integers:

The integers are if less than 0 and same as the positive side.

That is: -n . . . . . . -4, -3, -2, -1, 0, 1, 2, 3, 4 . . . , +n

Rational Numbers:

A rational number is a digit that can be in the form y/z where y and z are digits and z is not equal to zero.

A rational number is:

X/Y

Where y is not zero

Real Numbers:

The real numbers are including all of the calculating numbers. Real numbers are usually write using decimal numbers, in which a decimal point is located to the right of the number with place value one.

That is: 123.5567

Complex numbers

Complex numbers of the form i{y}, where y is a non–zero real number are called imaginary numbers.

a+ bi, bi = imaginary number

Computable numbers

The computable numbers are the set of all real numbers.


Learn numbers for kids – Examples


Learn numbers for kids – Example 1:

Adding the two real number 325.87 + 687.45

325.87
+687.45
1013.32
Answer:

1013.32

Learn numbers for kids – Example 2:

Multiplying natural numbers and the complex numbers 3 (4 + 8i)

Solution:

3 x (4 + 8i)

= 12 + 24i

Answer:

12 + 24i

Learn numbers for kids – Practice Problems:

Multiply the two integer numbers: -8 x 64

Answer:

-512