Is the TI-84 Plus CE allowed in IB Math exams?

The TI-84 Plus CE is commonly listed among the permitted TI-84 Plus models for IB examinations. It must not contain prohibited notes, programs, applications or stored examination content. Your school may reset its memory or apply restrictions according to the current examination guidance. Approval also depends on following the rules for the particular paper, since Math AA Paper 1 does not permit any calculator. Ask your IB coordinator to confirm the model and preparation procedure for your examination session.

Can I use a TI-Nspire CAS in an IB Math exam?

Some newer TI-Nspire CX II CAS models may be permitted when updated and placed in the specifically approved Press-to-Test configuration with CAS disabled. This does not mean every calculator labelled CAS is allowed. Older TI-Nspire CAS models and calculators such as the TI-89 are prohibited. The required operating system and blocked features can change between examination sessions. Your coordinator must therefore verify the exact model, software version and test-mode configuration.

Is a calculator allowed on IB Math Paper 1?

The answer depends on your mathematics course. Math AA Paper 1 is a non-calculator examination at both SL and HL. Math AI Paper 1 allows technology because all external AI papers are technology-based. Students should therefore avoid applying the AA rule to AI or assuming that all papers with the same number follow identical regulations. Check the course name printed on your examination materials and follow the instructions given by your school.

What is the best calculator for IB Math?

There is no single best calculator for every IB student. The strongest choice is usually an approved model that your teacher supports and that you can use confidently, such as a TI-84 Plus CE, Casio fx-CG50, compatible TI-Nspire, NumWorks or HP Prime. Classroom support matters because menu sequences and examination-mode procedures differ significantly between brands. A more powerful calculator will not help if you cannot find roots, regressions or distributions quickly. Choose early, confirm approval, and use the same model consistently in practice.

Do I need to show working when I use a calculator in IB Math?

Yes, a calculator result does not automatically demonstrate the method or reasoning required by the question. Write the equation, model, integral, distribution or statistical procedure that you used before giving the output. Include units, relevant domain restrictions and an interpretation when the problem has a real-world context. Use standard mathematical notation rather than copying abbreviated calculator syntax as your final answer. Clear working can also earn method marks if a later numerical input is incorrect.

Which calculator skills are most important for IB Math exams?

The core skills are graphing functions, adjusting the viewing window, and finding roots, intersections and extrema. You should also be able to solve equations numerically and evaluate numerical derivatives and definite integrals. Statistics practice should cover summary values, regressions, normal and binomial distributions, and any tests required by your course. AI students should give additional attention to modelling, matrices and financial functions where relevant. Finally, practise checking angle mode, interpreting output and rounding only at the end of a calculation.

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IB Math Exam Calculator: Allowed Models and Skills

IB Mathematics Resource Roundups IB IB Math Exam Tips

• 29 Sept 2026•9

IB Math Exam Calculator: Allowed Models and Skills

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IB Math Exam Calculator: Allowed Models and Skills | RevisionDojo

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IB Math Exam Calculator: Allowed Models and Skills

IB Mathematics Resource Roundups IB IB Math Exam Tips

• 29 Sept 2026•9

The IB Math exam calculator must be an approved graphic display calculator, or GDC, configured according to current IB examination rules. Common permitted choices include the TI-84 Plus family, selected TI-Nspire models, Casio fx-CG50, NumWorks, and HP Prime, but approval can depend on the operating system and exam-mode settings.

Your course determines when technology is allowed. Mathematics: Analysis and Approaches, or AA, has a non-calculator Paper 1, while Mathematics: Applications and Interpretation, or AI, permits technology throughout its external examinations. This guide explains the rules, common models, essential skills, and effective preparation.

When calculators are allowed in IB Math

The calculator rules differ between the two IB mathematics courses. Students should not assume that every Paper 1 is non-calculator.

Course and paper	Calculator rule
Math AA Paper 1, SL and HL	Calculators are not permitted
Math AA Paper 2, SL and HL	A GDC is required
Math AA Paper 3, HL only	A GDC is required
Math AI Paper 1, SL and HL	Technology is allowed
Math AI Paper 2, SL and HL	Technology is allowed
Math AI Paper 3, HL only	Technology is allowed

The official IB Mathematics: Analysis and Approaches guide confirms that AA students cannot use a calculator during Paper 1 and must have a GDC for Paper 2. The IB Mathematics: Applications and Interpretation subject brief identifies all external AI assessments as technology-allowed. RevisionDojo's IB Math AA resources and IB Math AI resources provide course-specific practice.

Which calculators are permitted?

The IB publishes examples of permitted and prohibited calculators, but approved software and required settings can change. Your school's IB coordinator must check the guidance for the current examination session.

Manufacturer	Common permitted examples	Required preparation
Texas Instruments	TI-83 Plus and TI-84 Plus families	Memory and applications handled as directed
Texas Instruments	Selected TI-Nspire CX and CX II models	Approved operating system and Press-to-Test settings
Casio	fx-9750GIII, fx-9860GIII and fx-CG50	Current software and Examination Mode for IB
NumWorks	NumWorks graphing calculator	Required software and IB exam mode
Hewlett-Packard	HP Prime	Current firmware and specified Exam Mode restrictions

This is not a complete authorization list. The IB's exam calculator policy directs schools to detailed current guidance, which takes precedence.

CAS requires careful checking

A computer algebra system, or CAS, manipulates expressions symbolically. Unrestricted CAS functionality is not permitted in IB examinations. However, selected TI-Nspire CX II CAS models may be accepted when an approved test mode disables CAS and other prohibited features. Older CAS models, including the TI-89 and older TI-Nspire CAS devices, remain prohibited. RevisionDojo's forbidden calculator guide explains this distinction.

Exam mode and prohibited content

An approved calculator can become non-compliant if configured incorrectly. Stored examination material, unauthorized applications, unrestricted communication features, and programs that replace required mathematical knowledge are prohibited.

Depending on the model, the school may need to:

update the operating system or firmware;
reset memory and remove unauthorized files;
activate Press-to-Test, Examination Mode, or IB exam mode;
disable CAS, communication, and other prohibited functions;
verify the visible exam-mode indicator.

Schools are responsible for checking devices, and some modes must be activated under supervision immediately before the examination. Consult the RevisionDojo exam-mode guide, then follow your coordinator's instructions.

Calculator functions you should master

You should be able to use the following functions quickly without searching through menus.

Graphs, calculus, and equations

Practise entering functions, setting a suitable viewing window, tracing points, and finding roots, intersections, maxima, and minima. You should also solve equations numerically and calculate numerical derivatives and definite integrals.

For example, solve $e^{-x}=x$ by graphing both sides and finding their intersection. In your written solution, identify the equation and report the relevant result, approximately $x=0.567$ , instead of writing only a calculator command.

Statistics and probability

Practise one-variable and two-variable statistics, regression, normal and binomial probabilities, inverse normal calculations, expected values, and syllabus-required tests. AI students should be especially fluent with modelling, goodness-of-fit procedures, matrices, and relevant financial functions. Check whether a probability command returns a single value, tail, or interval.

Settings and accuracy

Check degree or radian mode, graph settings, viewing windows, and list contents before practising. A correct trigonometric method in the wrong angle mode produces a plausible but incorrect answer.

Keep full precision during intermediate calculations and round only the final result. Unless instructed otherwise, IB Mathematics examinations commonly require exact answers or numerical answers correct to three significant figures.

How to prepare effectively

Use the same physical calculator in lessons, homework, and timed practice. Changing models shortly before the examination increases menu and syntax errors.

A practical routine is to choose one function, complete 5-10 focused questions under examination settings, record input or mode errors, and repeat the operation until it becomes automatic. Finish with mixed timed questions that require you to decide when technology is useful.

Written solutions should show the mathematical setup, relevant working, and interpretation. Calculator output does not replace reasoning, and an unexplained number may not earn every available mark. Use RevisionDojo's graphing calculator guide and Paper 2 calculator strategy for focused practice.

Common calculator mistakes

Frequent errors include using the wrong angle mode, choosing a window that hides a root, selecting the wrong distribution tail, rounding too early, and reporting solutions outside the required domain. Students also lose marks by copying calculator syntax instead of using standard mathematical notation.

Estimate answers where possible. A probability above 1, a negative length, or an intersection outside the stated interval indicates that the input or interpretation needs checking.

Conclusion

Your calculator must be both an allowed model and correctly configured. Confirm the current rules with your coordinator, learn the required exam mode, and practise graphing, numerical solving, calculus, statistics, and course-specific functions until they are routine.

RevisionDojo's IB Math Questionbank and calculus practice can support focused drills. Follow these with timed Mock Exams or Predicted Papers using the calculator settings required for the examination.

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