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SingaporeMathsQuick questions
Number and Algebra
Quick questions on Numbers and the four operations explained: N(A)-Level Mathematics Number and Algebra
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are order of operations?Show answer
When an expression mixes operations, work in this order: Brackets, then Indices (powers), then Division and Multiplication (left to right), then Addition and Subtraction (left to right). A useful memory aid is BIDMAS.
What are fractions?Show answer
To add or subtract fractions, rewrite them over a common denominator, then combine the numerators:
What are sign slips with negatives?Show answer
, but , because the power applies only to the unless a bracket is present.
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