Tuesday, 11 September 2012

P5 Maths 2: Order of Operation

STEP 1: 
Do all Multiplication and/or Division from left to right

STEP 2
Do all Addition and/or Subtraction from left to right


9-3+2
Do in order of sequence:
Step1: 9-3 = 6
Step2: 6+2 = 8

18 / 3 x 2
Do in order of sequence:
Step1: 18 / 3 = 6
Step2: 6 x 2 = 12

3 + 4 x 5
Order of Operation says to do "x" or "/" first, then do "+" or "-" according to Left to Right sequence:
Step1: 4 x 5 = 20
Step2: 3 + 20 = 23



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