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This question is to practice order of precedence in mathematical expressions. 

Please use * for multiplication and / for division. 

", "licence": "None specified"}, "statement": "

Every mathematical expression has a clear evaluation based on the order in which we carry out a calculation.

\n

The order is (from highest precedence to lowest precedence): 

\n\n

Simplify: $(\\var{a}-\\var{b})\\times \\var{c}+\\var{d}\\div{\\var{f}}$. 

", "advice": "

Remember that brackets are the highest order of precedence.  So always do those first. 

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Select the operation that you perform to simplify the expression and write the new resulting from performing this operation.  If you select brackets, you should replace the bracketed expression by a new expression.  eg (4+3)-2 would be come 7-2

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
[[0]][[1]]
[[2]][[3]]
[[4]][[5]]
[[6]][[7]]
\n

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