Monday, 15 February 2016

on 1 comment

Only for Genius! Find the answer!

1 comment:

  1. Think of it as money coming in and out of your bank account...

    If you have $3 and make a charge of $18, then you have -$15 in your account. Then adding $2 makes it overdrawn -$13.

    BEDMAS can confuse people. The acronym is to remember the order of the components, but you still have to remember the entire list of rules.

    Brackets
    Exponents
    Division and Multiplication
    *(in the order they occur)
    Addition and Subtraction
    *(in the order they occur).

    I was taught to do all the parenthesis then exponents, then insert brackets around the division & multiplication so it kept things in order.

    So the equation is expressed as such

    3 - 3 x 6 + 2
    = 3 - (3 x 6) +2

    Then you remember to do the equations inside brackets first, left to right, in the order they occur.

    = 3 - (18) + 2

    Then, since addition and subtraction are EQUAL, you do them IN ORDER, left to right.

    = (3 - 18) + 2
    = (-15) + 2
    = (-13)

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