IB Math AI SL Unit 1: Number & Algebra

IB Maths AI 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.

• Approximations and Error questions45 questions · 5 worked examples
• Financial Mathematics questions47 questions · 4 worked examples
• Logarithms and Exponentials questions16 questions · 3 worked examples
• Sequences and Series questions36 questions · 4 worked examples
• Systems of Equations questions45 questions · 5 worked examples
• Volume and Surface Area questions35 questions · 5 worked examples

Learn it first: AI SL Unit 1 notes

• Scientific notation and estimation
• Exponents and logarithms in real-world models

Where marks go in AI SL Unit 1

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

• Finance: compound-interest formula with regular payments, TVM signs and periods. With regular payments, use the TVM solver. Money in and money out have opposite signs. N counts payments (years × payments per year). Write down every value you enter (N, I%, PV, PMT, FV, P/Y, C/Y), so a slip can still earn method marks.
• Sequences: uₙ vs Sₙ vs n, and rounding n up. Decide first: one term (uₙ), a total (Sₙ) or which term (solve for n). Write the equation (uₙ = 42 means solve for n), then round n in the direction the context needs.

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

FAQ

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