Who this is for
- Grade 9 learners, parents and teachers getting ready for KJSEA Mathematics, Paper 903, in its final week.
- According to KNEC's revised 2026 KJSEA timetable, Mathematics is sat on Wednesday 28 October 2026, 8.30 a.m. to 10.30 a.m. It is the longest single paper of the week at 2 hours.
- This plan runs from Monday 19 October to the evening of Tuesday 27 October, with the rehearsal on Friday 23 October built in.
Mathematics was the hardest KJSEA paper in the country last year. When the Ministry of Education released the first KJSEA results on 11 December 2025, only 32.44 percent of candidates reached Meeting or Exceeding Expectations in Mathematics, the lowest of any subject except Kenyan Sign Language, as reported by Citizen Digital and The Standard. That figure is not a reason to panic. It is a reason to spend the final week before KJSEA Mathematics on the few things that move marks, rather than on rereading notes from Grade 7.
This KJSEA Mathematics final week plan gives you a day-by-day schedule from Monday 19 October to the night before Paper 903, shaped around the way the KNEC sample paper spreads its 40 questions across the five strands. It has a worked example for each strand, a pacing table for the two hours, the mistakes that cost marks a learner already knows how to earn, and a short checklist for Wednesday morning. Everything about dates, times and rules comes from the KNEC timetable document (reference KNEC/TD/SE/KJSEA/TT/2026/003). Where we rely on the press or on the KNEC sample paper, we say so.
Information current as of Term 3, October 2026.
Key takeaways
- KJSEA Mathematics 903 is on Wednesday 28 October, 8.30 to 10.30 a.m., the third day of the assessment (KNEC revised 2026 timetable).
- The KNEC sample paper has 40 questions: 20 multiple-choice items worth 20 marks and 20 structured questions worth 80 marks. Numbers and Measurement together account for 28 of the 40.
- Only 32.44 percent of 2025 candidates met or exceeded expectations in Mathematics (Ministry of Education results, 11 December 2025).
- The last week is for timed practice, an error log and drills on Numbers and Measurement, not for new sub-strands.
- KNEC allows only the specified non-programmable calculator and KNEC-printed mathematical tables. Test the calculator on Tuesday night.
KJSEA Mathematics 2026: what Paper 903 looks like
Before planning the final week, be clear about the paper itself. Three official or near-official sources describe it. KNEC's revised timetable gives the slot: Wednesday 28 October, 8.30 a.m. to 10.30 a.m., followed by a 30-minute break and Agriculture 906/1 at 11.30 a.m. KNEC's briefing notes for supervisors, as published by Education News Hub in February 2026, list Paper 903 as "Structured and Multiple-Choice Questions" on a personalised question paper with an OMR answer sheet for the multiple-choice part. And the Daily Nation's August 2025 explainer on how Grade 9 learners are examined described the sample paper as 40 questions in five parts, with 20 marks of multiple choice and 80 marks of short structured questions.
The same breakdown of the KNEC sample paper, reported by Education News Hub, shows how the 40 questions are spread across the KICD strands. The chart below sets it out. Treat it as the shape of the sample paper, not a promise about 2026: KNEC can change the balance, but the sample is the best public guide to where the marks sit.
| Strand | Multiple choice (sample) | Structured (sample) | Total questions | Days in this plan |
|---|---|---|---|---|
| Numbers | Q1 to Q7 (7) | Q21 to Q28 (8) | 15 | Two |
| Algebra (including inequalities) | Q8 to Q10 (3) | Q29 to Q31 (3) | 6 | One |
| Measurement | Q11 to Q17 (7) | Q32 to Q37 (6) | 13 | Two |
| Geometry (including construction) | Q18 to Q19 (2) | Q38 to Q39 (2) | 4 | Half a day |
| Data handling and probability | Q20 (1) | Q40 (1) | 2 | Half a day |
Two things stand out. First, Numbers and Measurement together carry 28 of the 40 questions in the sample, so a week that neglects them is a week spent in the wrong place. Second, 80 of the 100 marks are structured, and the same report notes that no single structured question carries more than 5 marks. That means the paper rewards steady, shown working across many short questions, not brilliance on one long one. A learner who writes the method and the unit for every structured question collects method marks even when the final number is wrong.
Terms used in this guide
KJSEA is the Kenya Junior School Education Assessment, sat by Grade 9 learners at the end of junior school.
Strand is a main area of the KICD curriculum design, such as Numbers or Measurement; a sub-strand is a smaller unit inside it, such as fractions or volume.
An OMR sheet is the machine-read answer sheet on which multiple-choice answers are shaded in pencil.
Why the final week of KJSEA Mathematics matters more than it looks
Paper 903 carries a heavy share of the final result. The Daily Nation's explainer reported that the written KJSEA papers make up 60 percent of a learner's overall score, with KPSEA results and Grade 7 and 8 school-based assessment contributing 20 percent each. Each learning area is then reported on KNEC's eight-level scale. According to KNEC's explanation of the grading system reported by The Star in December 2025, a score of 41 to 57 percent sits at Meeting Expectations 2 (5 points), while 58 to 74 percent is Meeting Expectations 1 (6 points), and 31 to 40 percent is Approaching Expectations 1 (4 points).
Look at what that means for one week of work. A candidate sitting around 38 percent in mock papers is three or four marks away from the next level up. A candidate at 55 percent is three marks from ME1. In a paper with 20 one-mark multiple-choice items and 20 short structured questions, three or four marks are exactly what careless units, an unshaded item or a skipped final question cost. This is why the final week is about protecting marks, not chasing new content.
What the 2025 results suggest
KNEC has published its 2025 KJSEA feedback reports and the 2025 assessment papers with marking schemes. Kenyans.co.ke reported on 7 September 2026 that they are on sale at the KNEC Bookshop in Nairobi, with the KJSEA reports in three volumes, one covering Languages, Sciences, Pre-Technical Studies and Mathematics. If your school has bought the Mathematics volume, ask the Mathematics teacher which weaknesses it names, and put those sub-strands first in this week. If it is not available, your child's own marked mock papers are the next best guide, and they are more specific to your child anyway.
The KJSEA Mathematics final week plan, day by day
The plan assumes a normal school week from Monday 19 to Friday 23 October, with the rehearsal on Friday, then a free weekend and two exam days (English on Monday 26, Kiswahili on Tuesday 27) before Mathematics on Wednesday 28. Weekday sessions are about 60 minutes in the evening. The weekend carries one full timed paper. Each session ends with marking and a line in the error log, which is simply an exercise book where every lost mark is written down with its sub-strand and the reason it was lost.
| Day | Focus | What to do (about 60 minutes) |
|---|---|---|
| Mon 19 Oct | Numbers (1) | Fractions, decimals, percentages, ratio and money problems. 10 short questions timed, then mark. |
| Tue 20 Oct | Measurement (1) | Area, surface area and volume, with unit changes (cm to m, cmΒ³ to litres). 8 questions, working shown. |
| Wed 21 Oct | Algebra | Simplifying, forming and solving equations, linear inequalities. 8 questions; check each answer by substitution. |
| Thu 22 Oct | Geometry and Data | One construction with ruler and compasses only; angle facts; mean, median, mode and simple probability. |
| Fri 23 Oct | Rehearsal day | No new work. Note the room and seat; pack the geometrical set and calculator into the exam bag. |
| Sat 24 Oct | Full timed paper | 2 hours from 8.30 a.m., exactly like Wednesday. Mark in the afternoon and fill the error log. |
| Sun 25 Oct | Numbers and Measurement (2) | Redo only Saturday's lost questions. Rest from mid-afternoon: English is on Monday. |
| Mon 26 Oct (evening) | Light touch | 20 minutes: reread the formula and units sheet. Kiswahili comes first on Tuesday. |
| Tue 27 Oct (evening) | Night before 903 | 30 minutes: error log, formula sheet, five multiple-choice items. Test the calculator. Sleep early. |
Notice what is missing. There is no day for "revise everything". By the final week a Grade 9 learner has been taught every strand. What they lack is speed under time pressure and the habit of showing working. Every session therefore ends with timed questions and marking, because marked practice is what exposes the gaps. If your child is following our 3-week KJSEA revision timetable, this plan replaces its Mathematics sessions in the last week; the other subjects carry on as before.
One worked example for each strand
These are practice items written for this guide in the style of short structured questions. They are not official KNEC questions. Cover the solution, attempt each one, then compare the working line by line. The working is the point.
1. Numbers: profit and percentage
Question. A trader in Kisumu buys 12 trays of eggs at KSh 360 per tray and sells each tray at KSh 420. Find (a) the total profit and (b) the profit as a percentage of the buying price.
- Profit per tray = 420 - 360 = KSh 60.
- Total profit = 12 Γ 60 = KSh 720.
- Percentage profit = (60 Γ· 360) Γ 100 = 16.67 percent, so 16.7 percent to one decimal place.
The mark trap: dividing by the selling price (420) instead of the buying price. Percentage profit is always worked out on the cost.
2. Algebra: an equation and an inequality
Question. (a) Solve 3(x - 2) = 2x + 5. (b) List the positive whole numbers that satisfy 2x + 3 < 11.
- Expand: 3x - 6 = 2x + 5.
- Collect terms: 3x - 2x = 5 + 6, so x = 11.
- Check: 3(11 - 2) = 27 and 2(11) + 5 = 27. Correct.
- For the inequality: 2x < 8, so x < 4. The positive whole numbers are 1, 2 and 3.
The mark trap: including 4. "Less than" excludes the boundary; "less than or equal to" includes it.
3. Measurement: volume and capacity
Question. A cylindrical water tank has a radius of 0.7 m and a height of 2 m. Find its capacity in litres. (Take Ο = 22/7.)
- Volume = ΟrΒ²h = 22/7 Γ 0.7 Γ 0.7 Γ 2.
- 22/7 Γ 0.49 = 1.54, and 1.54 Γ 2 = 3.08 mΒ³.
- 1 mΒ³ = 1,000 litres, so the capacity is 3,080 litres.
The mark trap: stopping at 3.08 and writing "litres". The question asked for litres, and the conversion carries its own mark.
4. Geometry: constructing a 60 degree angle
The sample paper's geometry structured questions call for construction with a pair of compasses and a ruler only, so a protractor-drawn angle will not earn the construction marks.
- Draw a straight line and mark a point A on it.
- With the compass point on A, draw an arc that cuts the line at B.
- Without changing the radius, put the compass point on B and draw an arc that cuts the first arc at C.
- Join A to C. Angle CAB is 60 degrees. Leave all construction arcs visible.
The mark trap: rubbing out the arcs to make the drawing look neat. The arcs are the evidence of construction.
5. Data handling and probability
Question. (a) Find the mean, median and mode of 4, 7, 7, 9, 13. (b) A bag holds 3 red, 5 blue and 2 green counters. One is picked at random. What is the probability that it is blue?
- Mean = (4 + 7 + 7 + 9 + 13) Γ· 5 = 40 Γ· 5 = 8.
- Median: the numbers are already in order, so the middle value is 7. Mode: 7 appears twice, so the mode is 7.
- Probability of blue = 5 Γ· (3 + 5 + 2) = 5/10 = 1/2.
For forty more fully worked items across every strand, see our KJSEA Mathematics worked examples and the free KJSEA Mathematics sample paper with answers.
Pacing the two hours of Paper 903
Saturday's full paper is where pacing gets fixed. KNEC's instructions are clear that no extra time is allowed, and that reading time is part of the time shown on the paper. A simple split works for most learners.
| Clock time | Part | Target |
|---|---|---|
| 8.30 to 8.55 | 20 multiple-choice items | About 75 seconds each; shade as you go |
| 8.55 to 10.20 | 20 structured questions | Just over 4 minutes each; skip and circle any question that takes longer than 6 |
| 10.20 to 10.30 | Return and check | Circled questions first, then units, then any unshaded item |
Our deeper guide on how structured questions earn method marks explains why a half-finished answer with clear working is worth more than a blank space. The rule for the exam room is simple: never leave a structured question empty. Write the formula, substitute what you know, and move on.
A case study: Wanjiru in Nyeri
Take Wanjiru, a Grade 9 learner in Nyeri whose last two mocks came back at 36 and 39 percent. Her error log from the first mock showed nine lost marks, and six of them were not about knowledge at all: two missing units, one answer in mΒ³ when litres were asked for, two structured questions left blank because she ran out of time, and one multiple-choice item never shaded. In the final week she practised only two things: the 25-minute limit on multiple choice and the "formula, substitute, answer with unit" habit. Her Saturday paper came back at 44 percent. Nothing new was learned. Marks she already owned stopped leaking. That is the realistic aim for most learners in the last seven days.
Common mistakes to avoid in the last week before KJSEA Mathematics
- Starting a new sub-strand. If your child never understood, say, loci or compound interest, the final week is not the time to begin. Strengthen what is half-known.
- Doing questions without marking them. Unmarked practice feels productive and teaches nothing. Every session ends with marking against the answers.
- Revising Mathematics on Sunday night instead of English. English 901/1 is at 8.30 a.m. on Monday 26 October. Respect the order of the timetable.
- Arriving with an untested calculator. KNEC permits only the specified non-programmable calculator. Check that it switches on, and pack the geometrical set the night before.
- Bringing notes or a phone near the room. KNEC's instructions say candidates may not have any book, notes or papers in or near the assessment room, and that a candidate found with a phone will have results cancelled.
- Leaving rough work on a loose sheet. KNEC says rough work must be done on the official answer booklet. Teach your child to do workings in the space given beside each question.
Resources for KJSEA Mathematics revision this week
You need two things this week: timed papers with answers, and a place to look up a method when your child is stuck. The free KJSEA Mini-Mock includes Mathematics items with a marking scheme and suits the Thursday session. For the full timed paper on Saturday, our KJSEA Mathematics revision pack has predictive papers with a separate answer booklet, so a parent can print the paper and keep the answers for marking. These are original practice papers written by CBC Edu Kenya, not KNEC papers. If several subjects need work, the KJSEA Complete Revision Course covers all nine learning areas in one download.
When a worked solution does not make sense, Somo, our CBC AI tutor, can explain the step in plain English or Kiswahili. Notes and practice for every Grade 9 subject are on the Grade 9 study hub, and if you want the full night-by-night plan for the whole exam week, our KJSEA timetable paper by paper covers every evening from Sunday 25 to Thursday 29 October.
Frequently asked questions
When is the KJSEA Mathematics paper in 2026?
According to KNEC's revised 2026 KJSEA timetable, Mathematics 903 is on Wednesday 28 October 2026 from 8.30 a.m. to 10.30 a.m. Braille candidates have until 11.00 a.m. Agriculture 906/1 follows at 11.30 a.m.
How many questions are in KJSEA Mathematics?
The KNEC sample paper has 40 questions: 20 multiple-choice items worth one mark each and 20 structured questions worth 80 marks in total. The 2026 paper should follow a similar format, but always read the instructions on the front of the paper itself.
Is a calculator allowed in KJSEA Mathematics?
KNEC's instructions say that a candidate using a calculator as permitted by the regulations must use the specified non-programmable calculator, and that only KNEC-printed mathematical tables with no added notes may be used. If unsure, ask the supervisor at the rehearsal on 23 October.
Which strands carry the most marks?
In the KNEC sample paper, Numbers has 15 of the 40 questions and Measurement has 13. Algebra has 6, Geometry 4, and Data handling and probability 2. This is why the plan gives Numbers and Measurement two sessions each.
My child scores below 30 percent. Is the final week still worth it?
Yes. KNEC's grading puts 21 to 30 percent at AE2 and 31 to 40 percent at AE1, so a few extra marks from shown working and full shading can move a learner up a level. Focus on multiple choice and the shorter Numbers questions.
Should my child revise Mathematics on the morning of the paper?
No more than a glance at the formula sheet over breakfast. A rested learner who arrives by 8.15 a.m., as KNEC requires, will do better than a tired one who revised at 6 a.m.
Where can I find the 2025 KJSEA Mathematics paper?
KNEC has released the 2025 KJSEA assessment papers and marking schemes, sold at the KNEC Bookshop in Nairobi according to Kenyans.co.ke. Ask your school whether it has a copy. Be careful with "leaked 2026 papers" offered online: our guide to KJSEA leaked-paper scams explains why they are always fake.
Conclusion
The final week before KJSEA Mathematics is short, and that is its strength. With Paper 903 on Wednesday 28 October, your child has five weekday sessions, one full timed paper on Saturday and two light evenings during the exam week itself. Spend them where the sample paper puts the questions, on Numbers and Measurement first, practise the two-hour pacing once, and keep an honest error log. Mathematics was the hardest KJSEA paper in 2025, which means calm, shown working is worth more here than anywhere else. For timed papers with separate answers, the KJSEA Complete Revision Course has everything this plan uses.
Further reading
Grade 9 KJSEA Complete Revision Course
All 9 learning areas in one download: notes, worked examples, topical questions and full marking schemes. Rebuilt for the 26 to 30 October assessment.
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