KNOWING OUR NUMBERS

This is a chapter from Class 6
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KNOWING OUR NUMBERS

Class 6

BASIC UNDERSTANDING

When we want to count or measure we use a mathematical object known as Numbers.

Numbers are used over years and its definition is extended to further branches which are zero, negative numbers, natural numbers, whole numbers, rational numbers, irrational numbers.

COMPARING NUMBERS

How to find the greatest and the smallest numbers?

When we compare two numbers the number of digits of the number may be equal or unequal

If the digits of given two numbers are unequal, then the number with more digits will be greater than number with less digits

Suppose the number of digits in two given numbers is equal. Then how will you find the greater or smaller of the two numbers?

                                                             

 

The Number with maximum                                                       The Number with minimum

Number of digits is the greatest                                                   number of digits is the smallest

                                        All numbers have equal number of digits

For eg: Consider two numbers 5724 and 3253, Number of digits in both the numbers = 4

The digits at thousands place of both the numbers is

For 5724 its is 5

For 3253 is 3

Now 5 >3

So, 5724 > 3253

If the digit at the thousands place is the same and the number of digits is also the same then?

For eg : Consider the Numbers 5724 and 5352

Here number of digits of both the numbers = 4

Digits at thousands place = 5

Digit at hundreds place for 5724 = 7 and

For 5352 is 3

So, 7 > 3

Implies 5724 > 5352

If now the digits at the hundreds place of two numbers is the same then?

For eg: Consider two numbers 7432 and 7453

At thousands place both have 7

At hundreds place both have 4

But at tens place 7432 has 3 and

7453 has 5

So, 3 < 5

Therefore 7432 < 7453

                                      And we can proceed further in a similar manner

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