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WHOLE NUMBERS(POST -3)

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GOOD MORNING BOYS! Let us revise  some properties of whole numbers. These properties help us to understand numbers better and make calculations under certain operations very simple!  CLOSURE PROPERTY UNDER ADDITION AND MULTIPLICATION ADDITION AND MULTIPLICATION IS COMMUTATIVE FOR WHOLE NUMBERS- This means you can add numbers in any order, the sum (answer) will be thhe same. eg. 7+3 =10             4+3+5 =12 3+7=10                                                       You can multiply numbers in any order, the product (answer) will be the same.  eg. 4 x 5=20            5 x 4 =20 ASSOCIATIVE PROPERTY OF ADDITION AND MULTIPLICATION ID ENTITY PROPERTY                           ...
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WHOLE NUMBERS (POST -1)

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  Good morning boys! Welcome to the next lesson -WHOLE NUMBERS. RECOLLECT...... -Numbers  1, 2, 3, 4, ...... are natural numbers . 1 is the smallest natural number. Natural number along with zero form the collection of whole   n umbers  . 0 is the smallest whole number. ALL NATURAL NUMBERS ARE WHOLE NUMBERS BUT ALL WHOLE NUMBERS ARE NOT NATURAL NUMBERS. TRY THESE SUMS! (Do them in your notebook) 1. Write the next three natural numbers after 8567 2. Write three whole numbers occuring just before  1000. 3. How many whole numbers are there between 35 an d 54 ? THESE WERE SIMPLE TO DO !! PREDECESSOR AND SUCCESSOR OF A NUMBER SUCCESSOR of a number is 1 more than the number. For eg. the successor of 7 is 7+1 =8 PREDECESSOR of a number is 1 less than the number. For eg. the predecessor of 7 is 7-1 =6 NOW DO THIS WORKSHEET IN YOUR NOTEBOOK-   I AM SURE YOU HAVE ENJOYED PLAYING WITH NUMBERS! THIS IS ALL FOR TODAY! HAVE A GREAT DAY...
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WHOLE NUMBERS (POST-4)

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GOOD MORNING BOYS ! You have learnt about commutativity of addition and multiplication. SUBTRACTION AND DIVISION ARE NOT COMMUTATIVE - because if you change the order of numbers in subtraction and division ,you get a different answer. -  Division of a whole number by 0 is not defined. FINDING THE PRODUCT SUITABLE GROUPING Like we did in addition , we will first multiply two numbers whose product should  be a multiple of 10 and then multiply the third number to this. This makes calculations easy. For eg.  7 x 5 x 2                                     ( 5 x 2 ) x 7                           10 x 7 = 70 REMEMBER THESE ...         5 x 2 = 10          25 x 4 = 100        50 x 2 = 100       125 x 8 = 1000   ...
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