0580.C1.1.03 — Identify and use: prime numbers.: past paper questions

Real questions on 0580.c1.1.03 — identify and use: prime numbers.

The newest 20 of 47 written questions. Open one to see it on the real paper.

1. 0580/11 · May/June 2026 · Q1d[1]
   1 | $1.694$ | $\sqrt{18}$ | $6$ | $6.666$ | $7$ | $\sqrt{225}$ | $25$ | $27$ | $39$ | $56$ | $1000$ | From the list of numbers, write down (d) a prime numberSee it on the paper →
2. 0580/21 · May/June 2026 · Q10b[2]
   (b) A number, $k$, is written as a product of its prime factors. $k=2^3\times 3^4\times 5\times c^2$ where $c$ is a prime number greater than 5. Write the number $20k^2$ as a product of its prime factors. Give your answer in terms of $c$ in its simplest form.See it on the paper →
3. 0580/32 · May/June 2026 · Q6[1]
   6 Explain why 39 is **not** a prime number.See it on the paper →
4. 0580/12 · February/March 2026 · Q2a[2]

   2-mark “Complete” question — its maths and diagrams are best seen on the paper.

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5. 0580/12 · February/March 2026 · Q2b[1]

   1-mark question — its maths and diagrams are best seen on the paper.

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6. 0580/12 · February/March 2026 · Q4a[1]

   1-mark question — its maths and diagrams are best seen on the paper.

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7. 0580/12 · February/March 2026 · Q4b[1]

   1-mark question — its maths and diagrams are best seen on the paper.

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8. 0580/12 · February/March 2026 · Q8[2]
   8 Write down the two prime numbers that are greater than $20$ but less than $30$. , [2]See it on the paper →
9. 0580/22 · February/March 2026 · Q3a(i)[1]
   | $-50$ | $-11$ | $9$ | $15$ | $27$ | $50$ | $83$ | (a) From this list of numbers, write down (i) a prime numberSee it on the paper →
10. 0580/11 · October/November 2025 · Q17a[1]
    17 (a) Write down a prime number between 20 and 30.See it on the paper →
11. 0580/22 · October/November 2025 · Q13a[2]
    $M=2^7\times 3^3\times 5^2$ (a) Write $14M$ as a product of its prime factors. Give your answer in index form.See it on the paper →
12. 0580/23 · October/November 2025 · Q7a[2]
    (a) The sum of all the prime numbers less than 10 is equal to 17. Find the sum of all the prime numbers less than 16.See it on the paper →
13. 0580/23 · October/November 2025 · Q7b[1]
    (b) $x$ is an integer. The sum of the prime numbers greater than 6 and less than $x$ is equal to 18. Find a possible value for $x$.See it on the paper →
14. 0580/41 · October/November 2025 · Q21[2]

    2-mark “Calculate” question — its maths and diagrams are best seen on the paper.

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15. 0580/41 · October/November 2025 · Q22[3]

    3-mark “Find” question — its maths and diagrams are best seen on the paper.

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16. 0580/41 · October/November 2025 · Q23[2]

    2-mark “Find” question — its maths and diagrams are best seen on the paper.

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17. 0580/41 · October/November 2025 · Q24a[1]

    1-mark “Write” question — its maths and diagrams are best seen on the paper.

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18. 0580/41 · October/November 2025 · Q24b[4]

    4-mark “Show” question — its maths and diagrams are best seen on the paper.

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19. 0580/41 · October/November 2025 · Q24c[3]

    3-mark question — its maths and diagrams are best seen on the paper.

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20. 0580/41 · October/November 2025 · Q24d[3]

    3-mark “Calculate” question — its maths and diagrams are best seen on the paper.

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What examiners said

Comprehensive responses • While the simple calculation was rarely seen, most candidates worked out the height correctly and completed the bar chart with correct height and width of the bar. Limited responses • There was some evidence of incorrect calculation of the height as 7 was seen. • Misinterpretation of the question was seen a number of times for a height of 3, the difference between the o...

— Examiner report, February/March 2026, 0580/12 Q2(a) (Cambridge)

Comprehensive responses • Nearly all candidates could find the difference between the heights of the two given bars. Limited responses • Misunderstanding of what was required was evident. The answer that was given were just the heights of racing or road bikes. in answers of the heights of the racing or road bikes.

— Examiner report, February/March 2026, 0580/12 Q2(b) (Cambridge)

Comprehensive responses • Some candidates did work out that two sections in each ring had to be shaded. Limited responses • Most candidates had little idea of how to work out the shading which meant a lot of no responses and a great many seeming more like guesses than any thought-out attempt.

— Examiner report, February/March 2026, 0580/12 Q4(b) (Cambridge)