Maths Shortcuts For Competitive Exams

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10 Comments

  1. NAVEEN KUMAR

    sir, i am preparing for ssc combined grauadate exam this year i want shortcuts to solve the problems of maths and how to prepare for GK , Reasoning and english in very short time period. pls tell sir.

  2. Harish Chakrawarthy

    For easy math squaring shortcuts and multiplication shortcuts
    For example to show one of my methods:

    To square a two digit number, say 74

    7^2=49
    (7*4)2=56
    4^2=16

    now add the digit other than the ones digit with previous number.

    1. 49 cant be added with a previous number.
    2. add the 5 of 56 with 49, 49+5=54 then simply attach the ones digit.becomes 546
    3. similarly add 1 of 16 with 546 and attach 6.

    you get 5476.
    this is the square of 74.
    i.e. 74^2=5476 πŸ™‚ πŸ™‚ πŸ™‚ πŸ™‚ πŸ™‚ πŸ™‚

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