How the 20 marks of a Paper 032 question are split, how to read a real-world problem, set out a structured extended response, and a full 20-mark practice question on a Module 1 situation.
5 narrated scenes. Press play, listen and read along — the points appear as they are explained. Use ‹ Prev / Next › or the scene bar to jump to any scene.
One question, one hour, 20 marks — and the marks are labelled by skill. Learn what each label rewards and you can plan every line of your answer.
Narration uses your device’s built-in voice. No sound? Switch to “Captions only” — the captions advance on their own.
Copy these into your notebook in your own words — that is how they stick.
Private candidates; 1 hour; three optional questions (one per module); attempt one; 20 marks weighted to 60.
Rules, procedures, definitions, facts; simple computations.
Algorithmic thinking: applying methods to the problem situation.
Translate non-routine problems; make inferences and generalisations; analyse and synthesise.
Define letters; label parts; show formula → substitution → answer with units.
“This means…”, “Therefore…”, “I recommend … because …” with numbers quoted.
Read all three questions; pick the one you can finish.
Units, rounding, and that the conclusion answers the original question.
8 items modelled on real CSEC Paper 1 questions. Choose one answer for each, then check. Aim for 80% or better. Work each item on paper first.
Write full answers, then reveal the mark scheme and tick the points you earned (20 marks in total). Show all your working — method marks count. Your answers are saved on this device.
Question 1 [20 marks]
A school club makes T-shirts to sell. It costs $240 to set up the design and $18 to make each shirt. Each shirt is sold for $30.
(a) (a) Let n be the number of shirts. Write an expression for (i) the total cost C and (ii) the revenue R in terms of n. [2]
(b) (b) Explain what is meant by “break-even” and calculate the number of shirts that must be sold to break even. [3]
(c) (c) Calculate the profit if 75 shirts are sold. [2]
(d) (d) Calculate the percentage profit on the total cost, correct to 1 decimal place. [2]
(e) (e) The club offers a 15% discount on the selling price. State the new price per shirt and calculate the new break-even number of shirts. [3]
(f) (f) The club expects to sell 40 shirts. Calculate the profit (i) at $30 and (ii) at the discounted price, and advise the club whether to offer the discount. [5]
(g) (g) The cost per shirt is total cost ÷ number of shirts. Find it for 20 shirts and for 75 shirts, and explain why the cost per shirt falls as more shirts are made. [3]
Everything in this lesson is based on these parts of the CXC syllabus and papers.