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Questions testing understanding of the precedence of operators using BIDMAS, applied to integers. These questions only test DMAS. That is, only Division/Multiplcation and Addition/Subtraction.
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", "advice": "BIDMAS stands for:
\nBrackets
\nIndices
\nDivision
\nMultiplication
\nAddition
\nSubtraction
\n\nAnd is a way for us to remember guidance about the order in which calculations are carried out to ensure that everyone doing teh same sum gets the same answer. In this case the first thing that is in the question is Division.
\nFirst work through the expression from left to right, evaluating any division as you come to it. You should be left with an expression involving only pluses and minuses. Evaluate this expression, again working from left to right. Thus:
\n\n\\[\\var{h}-\\var{a2*b2} \\div \\var{b2}\\]
\n\\[=\\var{h}-\\var{a2}\\]
\n\\[=\\var{h-a2}\\]
\nUse this link to find some resources which will help you revise this topic.
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