ही साईट 1024 गुणीले 768 किंवा त्याहून अधिक रिझॉल्युशनमध्ये सर्वोत्तमप्रकारे पाहता येईल

 

Mental Math Methods

 
 


 


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शिष्यवृत्ती परीक्षांच्या अभ्यासासाठी सीडी-रॉम (CD for the preparation of scholarship exams)


 

 

  1. Casting out nines - methods for cross checking your arithmatic operations like addition, subtraction, multiplication and division

  2. Addition/Subtraction methods

  3. Multiplication methods

    1. Multiplying by 5

    2. Multiplying by powers of 10

    3. Multiplying by 9, 99 etc

    4. Multiplying by numbers near 100, 1000

    5. Multiplying by 11

    6. Multiplication - same first digit, second digits add to 10

    7. Multiplication by factorizing rearranging

    8. Multiplying 2 dig numbers

    9. General multiplication (3digits x 2digits, 3digits x 3 digits)

    10. General multiplication (4digits x 2digits, 4digits x 3 digits, 4digits x 4 digits)

  4. Square/Square root methods

 

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