Cambridge International A-Level Maths · 9709

9709 maths practice that marks your handwritten working

Practise past-paper questions topic by topic. Photograph your working and Sigma shows you where you went wrong, checked against the mark scheme, with a hint to fix it yourself.

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Question. Find the coordinates of the stationary point on the curve y = 2x2 − 12x + 7.
Your working
dy/dx = 4x − 12
4x − 12 = 0  ⇒  x = 3
y = 18 − 36 + 7 = −13
Stationary point (3, −13)
Nearly there: one slip

Your method is spot on: you differentiated correctly and set dy/dx = 0 to find x = 3. The slip is in your last line of arithmetic, so check 18 − 36 + 7 again. Fix it and upload a new photo.

Differentiation · complete understanding Stationary points · method correct, arithmetic slip
An example of the feedback you get on a photo of your working.

How it works

Work on paper, the way you will in the exam. Sigma does the marking.

Pick a topic

Choose a unit and a topic, such as quadratics, circular measure or the normal distribution, and get real past-paper questions on just that.

Photograph your working

Answer on paper and take a photo. Sigma reads handwritten maths, so there is nothing to type.

See where marks were lost

Feedback points to the first line that went wrong and gives you a hint, not the answer, so you can correct it and try again.

What’s covered for 9709

Each unit is built from real Cambridge past papers, with every question part tagged by topic and skill.

Pure Mathematics 1 Free
Paper 1 · over 1,000 question parts
Quadratics, functions, coordinate geometry, circular measure, trigonometry, series, differentiation, integration
Mechanics Coming soon
Paper 4
Forces and equilibrium, kinematics, momentum, Newton’s laws, energy, work and power
Probability & Statistics 2 Coming soon
Paper 6
Poisson distribution, linear combinations, continuous random variables, sampling, hypothesis tests

Built for the way you revise

Doing past papers is only useful if you find out why you lost the marks.

Handwritten input

Write the way you will in the exam. Sigma reads your photo, including fractions, powers and surds.

Slips and method errors told apart

An arithmetic slip and a wrong method need different fixes. Your feedback says which one it was.

A skill-by-skill markbook

Every attempt updates your level in each skill, weighted towards your recent work, so you can see what is improving and what to practise next.

Hints, chat and worked solutions

Stuck? Ask the tutor for a nudge, or open a full worked solution once you have had a go.

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