# X Divided by 2Y

## An Advanced Mathematics Lesson Starter Of The Day

If $$x = 24$$ and $$y = 3$$, what is the value of $$x \div 2y$$ ?

Try the following on both a scientific calculator and a GDC.

Type in 24 and store it as $$x$$.

Type in 3 and store it as $$y$$.

Type in $$x \div 2y$$ then press enter (or equals).

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On a TInSpire GDC the answer is 36

On a Casio fx-350MS the answer is 4

The correct answer should be 36 because x divided by 2y, when written out in full is x divided by 2 multiplied by y

The order of operations (BIDMAS or PEMDAS) states that if multiplication and division are the only operations in an expression then they should be performed from left to right.

Why then does the scientific calculator give an answer of 4?

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