## Monday, 15 February 2016

# Only for Genius! Find the answer!

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

ReplyDeleteIf 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)