IB Math AA SL Unit 1: Number & Algebra

IB Maths AA SL Unit 1: Number and Algebra, topic by topic

Each topic in this unit has a free page with step-by-step worked examples and the key formulas, then exam-style questions with mark schemes.

• Binomial Theorem questions46 questions · 3 worked examples
• Exponentials and Logarithms questions73 questions · 3 worked examples
• Financial Math questions25 questions · 3 worked examples
• Proof questions18 questions · 3 worked examples
• Sequences and Series questions64 questions · 3 worked examples

Learn it first: AA SL Unit 1 notes

• Surds, rationalising, and exact answers

Where marks go in AA SL Unit 1

From the IB subject reports we summarise on AA SL Examiner Insights, in our own words:

• Sequences: term vs sum, counting n, and spotting the sequence. Write out the first three terms and label them u₁, u₂, u₃ before using a formula. Decide whether the question wants one term (uₙ) or a total (Sₙ).
• Proof: testing a few values instead of proving the general case. Work with a general n: expand, simplify and factor out the required multiple, then write the concluding sentence.
• Binomial expansion: the coefficient inside the bracket is not raised to the power. Write the general term with brackets, e.g. ⁵C₃(2x)³(−3)², and evaluate each bracket before multiplying. Answer exactly what is asked (coefficient or term).

The questions here are original, written in the style of IB papers with IB-style mark schemes; for real papers see the IB Maths AA SL past papers page.

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Also for AA SL: common exam mistakes · syllabus checklist