Numbers

**Category : **3rd Class

**Numbers**

- The number system contains ten digits 0,1,2,3,4,5,6,7,8,9.

**Largest and smallest numbers:**

- The smallest one digit number is 1.
- The largest one digit number is 9.

- The smallest two digit number is 10.
- The largest two digit number is 99.
- The smallest three digit number is 100.
- The largest three digit number is 999.
- 10 Ones = 1 Ten
- 10 Tens = 1 Hundred

- 10 Hundreds = 1 Thousand

**Place Value of each digit in a number:**

In a four digit number, there are four places named:

Ones place. Tens place. Hundreds place and Thousands place.

Ex:

**Ascending Order of numbers:**

Arranging numbers from the least number to the largest number is called Ascending Order.

Ex: 13, 67, 132, 168 are in ascending order

**Descending Order of numbers:**

Arranging numbers from the largest number to the least number is called Descending Order.

Ex: 168, 132, 67, 13 are in descending order.

**Symbols used for comparison of two numbers:**

This is the **"equal to”** sign. When we use it between two numbers, it means that the numbers on both sides of the sign have the same value.

Ex: 53 = 53

This is the **"greater than"** sign. It is placed between two numbers in such a way that the

open side is towards the bigger number.

Ex: 43 > 34

This is the **“less than"** sign. It is placed between two numbers in such a way that the closed side is towards the smaller number.

Ex: 57 < 69

Rules for comparison of numbers:

**Rule 1:**

A numeral containing more digits is greater.

Ex: 163 > 35

**Rule 2:**

If two numerals contain the same number of digits, the numeral having greater digit at the left most place will be greater.

**Rule 3:**

If the left most digits are also the same, we go to next digit from left and compare.

**Successor of a numeral:**

Successor of a particular numeral comes just after that numeral. So, we can find out the successor of a numeral by adding 1 to the given numeral.

Ex : The successor of 99 is 99 + 1 or 100.

Predecessor of a numeral:

Predecessor of a particular numeral comes just before that numeral. So, we can find out the

predecessor of a numeral by subtracting 1 from the number.

Ex : The predecessor of 100 is 100 - 1 or 99.

**Even numbers:**

The numbers that have 2, 4, 6, 8 and 0 in the ones place are called even numbers.

Ex: 4,32, 168, 490

**Odd numbers:**

The numbers that have 1, 3, 5, 7 and 9 in the ones place are called odd numbers.

*play_arrow*Number Sense and Numeration*play_arrow*Number Sense and Numeration*play_arrow*Numbers

You need to login to perform this action.

You will be redirected in
3 sec