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Numbers System Grade 2 Kids


  • Number System contains ten digits 0, 1 , 2, 3, 4, 5, 6, 7, 8 and 9. There are only ten digits but numbers are infinite.
  • The Largest and Smallest numbers
               The Smallest one digit number is 0 and the largest one digit number is 9
               The smallest two digit number is 10 and the largest two digit number is 99
               The smallest three digit number is 100 and the largest three digit number is 999

  • Place Value : In number system value ( place value ) of digit is depend on the position of that digit in number.
                 Place value chart

Thousand                     Hundred                Tens                        Ones
1000                           100                            10                                 1

e.g.  in number     4 5 6
                              |  |   | ones place   6 ones so place value 6
                              |  | 
                              |  | Tens  Place     5 Tens so place value 50
                              |
                              | Hundreds Place   4 hundreds so place value 400


  • Numbers in Order
              Ascending order : Arranging number from the least number to the largest number is called                                                 Ascending order 
               Descending order : Arranging numbers from the largest number to the least number is called                                                Descending order 

  • Rules for comparison of numbers
                  Rule 1 : A number containing more digits is greater.
                  Rule 2 : If two numerals has same numbers of digits, the numeral having greater digit at                                     the left most place will be greater 
                  Rule 3 : If the left most digits are also same , consider the next digit from the left and                                        compare. If these digits are also the same , then consider the next digits from the                                  left and compare. The number with greater digit in this place will be greater.

  • Even and Odd numbers :
              Even Number : The numbers that have 0 , 2, 4, 6 or 8 in the ones place are called even                                                   number

              Odd Number : The numbers that have 1, 3, 5, 7 and 9 in the ones place are called odd                                                    number


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