Calculators are no different than computers. The tiny chip use binary to come up with the anwer.
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Writing on a calculator depends upon the mathematical function the user wants. All that has to be done is press a few buttons i.e. numbers, operations, etc. and press the 'is equal to or =' sign. Bingo! you get the answer.
It should be 60 but I am not sure its been awhile since I have done any type of arithmetic. I would double check on a calculator I could not get mine to work so i cant check it for you.
23.6053
It is easy to use in further analysis calculation can be done easily using arithmetic mean is unique value for each data set
The 'Order of Operations' ensures that arithmetic and maths is done in the correct order: 1 Parentheses (brackets) 2 Exponents (Powers and Roots) 3 Multiplication and Division 4 Addition and Subtraction Memory aid is 'PEMDAS' Note: In the calculation below, the parentheses are done first, then the multiplication done last. (8+2)×(9÷3)=30