← GCSE Computer Science

P08 3.2.3 Arithmetic operators incl. real division, DIV and MOD

Currently Exam-ready · last touched 2026-10-20

DIV and MOD names last asked cold 18 Sep (right); redundant-brackets loose end still unobserved. Retest the names in a later starter.

Every change

WhenChangeEvidenceSession
2026-10-20Secure → Exam-readyadjudicated paper #9 Q13: 1/1, why:due, print(10/4) → 2.5 inside a timed section; secure since 11 Sep (33 days at the sitting) with cold successes 18, 21 and 27 Sep since — spaced re-test rule, secure → examready.standalone
2026-10-14Secure → Securepaper #9 Q13: 1/1, loss=none — print(10/4) gives 2.5, in 2 minsession 106
2026-09-28Secure → SecurePlacement Q5: 17 // 5 = 3, 17 % 5 = 2, both correct cold, 2/2, 27 Sep — the values form the loose end asked for.session 52
2026-09-21Secure → Secureaudit: bar met in session 36 — 17 // 5 and 17 % 5 → 3 and 2, cold, unaided; second consecutive cold success on the operations confirms the status holds.standalone
2026-09-21Secure → SecureStarter Q1, 21 Sep, cold, no notes: values of 17 // 5 and 17 % 5 → "3 and 2" unaided. Second cold success on the operations; the names were not asked today.session 36
2026-09-18Secure → SecureStarter Q1, 18 Sep, cold, no notes, third ask: '// and %' → "Div and mod" unaided, after "i don't know" on 8 and 15 Sep.session 33
2026-09-17Secure → Secure17 Sep starter: asked the AQA names for // and % → "i don't know", second consecutive session (told 8 Sep, 15 Sep). Told again with a hook (DIV keeps whole numbers, MOD keeps the remainder). Operations themselves not tested today.session 29
2026-09-15Secure → Secure15 Sep warm-up: 17 % 5 → 2 unaided, but could not name DIV and MOD for // and % ("i don't know"); told. Operation retained, AQA names not. Loose end on redundant brackets not observed — no arithmetic expression written today.session 27
2026-09-11Developing → Secure11 Sep: solved Code Lab 'Hours and minutes' (p08-time) 3/3 independently, in a later session than the 8 Sep teaching. Self-corrected two exact-match faults without hints — a stray print producing an extra output line, and 'hours and minutes' where the brief specified 'hours minutes'. Applied // and % correctly to a novel problemsession 22
2026-09-11Developing → Developing8 Sep: predicted 20/8=2.5, 20//8=2, 20%8=4 unaided; identified // and % as the operators for hours and minutes from 135; applied arithmetic plus int() correctly in Code Lab 'Adding VAT', solved in 2 runs without code being written for hersession 21
2026-09-08Not started → DevelopingTaught 8 Sep with worked examples; predicted 20/8, 20//8 and 20%8 correctly unaided, identified int() as the fix for the float result, and solved Code Lab 'Adding VAT' 3/3 tests independently using the constant and int()session 14
2026-09-07Not started → Not startedIntroduced + - * / and int() on 7 Sep via the VAT task; stated she has never done arithmetic in Python before. Not yet attempted independentlysession 10

In papers

AttemptPaperQMarksNote
Exam practice — week 42 · maths, lit, cs — GCSE Computer Science sectionexam-skills #9131/11. 2.5 correct — did not fall for integer division.
Placement — Computer Science paper 1 (Python) — GCSE Computer Science sectionexam-skills #152/23 and 2 — both correct. 2/2.

Materials

Craig'n'Dave: SLR 08 Basic programming concepts (video playlist)
Arithmetic operators including DIV and MOD (// and % in Python). Pair with Code Lab p08-time.
video
Teach-ICT: Operators
Arithmetic operators, real division, DIV and MOD.
notes
PMT: Programming (notes, flashcards, questions)
Free, no login. Retrieval layer after teaching.
practice
AQA 8525 specification v1.3 (first teaching Sept 2025, exams June 2027 onwards)
THE document to teach to. Sections 3.1–3.8 are the syllabus; the right-hand 'additional information' column gives the depth limits. Verified 5 Sep 2026.
notes
AQA Summary of changes (8525), June 2025 — what was removed for 2027
Removed: Von Neumann as a named model, optical storage, LAN topologies, Ethernet, Wi-Fi, UDP, FTP, alternative link-layer names. Void these questions on any 2022–2026 paper.
notes
AQA 8525 overview page (specs, teaching guides, sample papers)
Stable entry point if any file link below dies. Lists both spec versions and the 2027 sample materials.
other
AQA subject-specific vocabulary (first exam 2027)
The terminology examiners expect. Use for retrieval starters and to check definitions in written answers.
notes
AQA Notes and guidance: Pseudo-code (8525/1)
Every algorithm in a question paper uses this pseudo-code. She must READ it fluently; she need not write in it.
notes
AQA Notes and guidance: Python (8525/1)
The exact Python style AQA uses in question papers and mark schemes. Use if Python 3 is the chosen language.
notes
AQA Notes and guidance: C# (8525/1)
The exact C# style AQA uses in question papers and mark schemes. Use if C# is the chosen language.
notes
AQA Notes and guidance: VB.NET (8525/1)
The exact VB.NET style AQA uses in question papers and mark schemes. Use if VB.NET is the chosen language.
notes
AQA Notes and guidance: 8525/1 Marking guidance (coded solutions)
FOR THE MARKER. AQA's examiner rulebook: logic over syntax, indentation rules per language, design marks, meaningful variable names, typing rules, records. Read before marking any code question. Verified 5 Sep 2026.
notes
Specimen Paper 1 (Python) 8525B/1 — sample assessment materials
Official specimen, 90 marks, 2h. Paper 1 content unchanged for 2027, so fully usable. Handwrite the code answers.
paper
Specimen Paper 1 (VB.NET) 8525C/1 — sample assessment materials
VB.NET variant of the same specimen. The C# variant (8525A/1) is on the AQA assessment-resources page.
paper
Specimen Paper 1 mark scheme (all three languages) 8525/1
Mark against the section for her language only. Shows the 'Mark A/B/C' feature-marking and 'max N if any errors' caps.
paper
Sample Paper 2 question paper — Sample set 1 (first exam 2027) 8525/2
The ONLY official Paper 2 on the 2027 content. Use as the first full Paper 2 mock. 90 marks, 1h45.
paper
Sample Paper 2 mark scheme — Sample set 1 (first exam 2027) 8525/2
Contains the level-of-response band descriptors and flags the Von Neumann question as no longer asked from 2027.
paper
June 2023 Paper 2 question paper 8525/2 (legacy spec)
LEGACY: void any question on Von Neumann, optical storage, topologies, Ethernet, Wi-Fi, UDP, FTP and reduce the maximum before marking.
paper
June 2023 Paper 1 (VB.NET) question paper 8525/1C (legacy spec)
Paper 1 is unaffected by the 2027 changes. The 1A (C#) and 1B (Python) variants of the same paper are on the AQA past-paper finder.
paper
June 2023 Paper 1 mark scheme 8525/1 (all languages)
Covers 1A, 1B and 1C. Note the examiner 'I.' (ignore) lists — the compile tolerance in practice.
paper
June 2023 Paper 1 examiner report 8525/1
What real candidates got wrong. Key lines: design marks exist even for wrong code; attempt every coding question; the indentation grids are misused.
notes
June 2022 Paper 1 mark scheme 8525/1 (all languages)
Legacy but Paper 1 content is unchanged. Question paper via the past-paper finder.
paper
AQA past-paper finder (2022–2024 papers, mark schemes, examiner reports, modified papers)
Search 8525. The most recent series (2025, 2026) are login-gated for about a year — ask the exam centre. 2027 is the first series on the new content.
other
AQA 8525 assessment resources page
The file list renders in-browser only. Filter by 'Sample papers' for the C# specimen (8525A/1).
other
AQA GCSE grade boundaries — June 2024 (contains 8525A/B/C rows, out of 180)
Legacy proxy only. The tracker holds the 8525C row. Look up 8525A or 8525B here once the language is chosen. No 2027 boundaries exist until August 2027.
other
AQA GCSE subject grade boundaries — June 2025
Most recent legacy series. Directional only.
other
AQA GCSE exam timetable May/June 2027 (version 1.0)
8525/1A/1B/1C Monday 10 May 2027 am; 8525/2 Wednesday 19 May 2027. Confirm with the centre.
other
AQA private candidates page
PARENT: the centre must sign the Practical Programming Statement (spec 5.1) and declare the Paper 1 language at entry. Confirm both in writing early.
other