Mini practice paper: 8 questions
Mixed-difficulty questions from across the Mathematics syllabus. Tap "Show answer" after each to check yourself.
Q1 · Difficulty 1/3
A bag contains 5 red marbles, 3 blue marbles, and 2 green marbles. A marble is drawn at random from the bag. What is the probability of drawing a blue marble?
- 3/10
- 1/3
- 3/7
- 1/10
Show answer & explanation
✓ Answer: A — 3/10
Award 1 mark for correctly identifying probability = number of blue marbles / total marbles = 3/10. D is incorrect — this would be probability of 1 marble out of 10. B is incorrect — this confuses the calculation with 3 out of 9. C is incorrect — this incorrectly excludes green marbles from the total.
Q2 · Difficulty 1/3
Calculate 2.5 × 0.4
- 1.25
- 10
- 1.0
- 0.1
Show answer & explanation
✓ Answer: C — 1.0
2.5 × 0.4 = 1.0. Or think: 25 × 4 = 100, then move 2 decimal places.
Q3 · Difficulty 1/3
What is the HCF of 18 and 24?
- 12
- 18
- 3
- 6
Show answer & explanation
✓ Answer: D — 6
18 = 2×3², 24 = 2³×3. HCF = 2×3 = 6.
Q4 · Difficulty 1/3
A scatter diagram is used to show the relationship between:
- Two variables
- One variable over time only
- Parts of a whole
- A single set of categories
Show answer & explanation
✓ Answer: A — Two variables
A scatter diagram plots paired values of two variables to reveal any relationship.
Q5 · Difficulty 1/3
A farmer in St. Elizabeth, Jamaica, recorded the masses (in kg) of 10 pumpkins harvested from his field: 3, 5, 5, 6, 7, 7, 7, 8, 9, 10. What is the mode of this data set?
- 10 kg
- 5 kg
- 6.7 kg
- 7 kg
Show answer & explanation
✓ Answer: D — 7 kg
Award 1 mark for correctly identifying the mode as the value that occurs most frequently. The value 7 appears three times, which is more than any other value. B is incorrect — 5 appears only twice. C is incorrect — 6.7 is the mean, not the mode. A is incorrect — 10 is the maximum value, not the mode.
Q6 · Difficulty 1/3
The population of Jamaica in 2023 was estimated as 2.825 × 10⁶. What is this number written as an ordinary number?
- 28 250 000
- 282 500 000
- 282 500
- 2 825 000
Show answer & explanation
✓ Answer: D — 2 825 000
Award 1 mark for 2 825 000. The power of 6 means the decimal point moves 6 places to the right: 2.825 × 10⁶ = 2 825 000. C is incorrect because the decimal point moved only 5 places. A is incorrect because the decimal point moved 7 places. B is incorrect because the decimal point moved 8 places.
Q7 · Difficulty 1/3
A research station in Trinidad recorded the daily rainfall (in mm) for 80 days during the wet season. The data was organized into a cumulative frequency table. What does the cumulative frequency represent?
- The total number of days with rainfall above a certain value
- The total number of days with rainfall up to and including a certain value
- The average rainfall for all days in the period
- The difference between the highest and lowest rainfall values
Show answer & explanation
✓ Answer: B — The total number of days with rainfall up to and including a certain value
Award 1 mark for recognizing that cumulative frequency is the running total of frequencies up to and including a particular class boundary. A is incorrect because cumulative frequency counts values up to, not above, a certain point. C confuses cumulative frequency with mean. D describes the range, not cumulative frequency.
Q8 · Difficulty 1/3
A student in Trinidad measured the length of a sugar cane stalk as 3.456 metres. She was asked to write this measurement correct to 2 decimal places. Which value is correct?
- 3.5 m
- 3.45 m
- 3.4 m
- 3.46 m
Show answer & explanation
✓ Answer: D — 3.46 m
Award 1 mark for 3.46 m. Rounding to 2 decimal places means keeping 2 digits after the decimal point. The third decimal place (6) causes the second decimal place (5) to round up to 6. C is incorrect because it shows only 1 decimal place. A is incorrect because it shows 1 decimal place. B is incorrect because the rounding was not applied correctly.
CXC CSEC Mathematics FAQ
What does the CXC CSEC Mathematics exam look like?
The CXC CSEC Mathematics exam is structured across 3 components. Paper 1 (Section A): 60 multiple-choice questions, 1 mark each. 75 minutes. Tests knowledge across the whole syllabus. Paper 2: Structured short-answer + 1 extended response question. Section A is compulsory; Section B has a choice. Approximately 2 hours 10 minutes. School-Based Assessment (SBA): Coursework component graded by the teacher, externally moderated. Worth ~20-30% of the final grade depending on subject. Total exam time: ~3.5 hours across Paper 1 and Paper 2 sittings.
Can I download a free CXC CSEC Mathematics past paper?
Real CXC past papers are published directly by CXC on their official website. Kramizo doesn't redistribute copyrighted past papers, but we do generate free AI-written practice papers in the exact same style — same command words, same difficulty tier, same mark conventions. Use this practice paper as warm-up, then time yourself on official past papers before exam day.
How is CXC CSEC Mathematics graded?
Grades: I (highest) to VI (lowest). A grade of III or above is typically required for further study. Kramizo's practice questions are tagged with difficulty 1-3 mapping roughly to the lower, middle, and top grade boundaries you'll encounter in the real exam.