CBSE Class 10 Maths Basic 2026 paper analysis

The CBSE Class 10 Maths Basic 2026 paper (set 430/1/1) had 38 questions for 80 marks in three hours. Every question number had to be answered, with nine either-or choices inside questions. Algebra carried 20 marks. The three questions we rated hardest were compulsory proofs. This is our reading of the paper itself, not of any child's results.

How was the CBSE Maths Basic 2026 paper set out?

Section-wise, set 430/1/1 is printed in five sections, A to E. CBSE's revised Class 10 date sheet for 2026 lists Maths Basic (code 241) on Tuesday 17 February 2026, from 10:30 am to 1:30 pm.

• Section A: 20 one-mark questions. Questions 1 to 18 were multiple choice. Questions 19 and 20 were assertion-reason, where you judge two linked statements.
• Section B: 5 very short answers, 2 marks each.
• Section C: 6 short answers, 3 marks each.
• Section D: 4 long answers, 5 marks each.
• Section E: 3 case studies, 4 marks each. A case study is a short real-life situation with questions built on it.

Nine questions had an internal choice - two versions printed with OR between them, and you answer only one. That is what an OR choice means. There were two in each of Sections B, C and D, and one inside each case study.

So the paper printed more marks than you answer. Counting both versions of every OR, it printed 106 marks of questions. Of those, 54 marks had no choice. The other 52 came in nine OR pairs: you answer 26 and leave 26.

The split changes with choice. Algebra is 30 of the 106 marks printed, but only 10 of the 54 marks with no choice. Geometry and coordinates hold 17 of those 54.

Which topics carried the most marks?

Algebra did, with 20 of the 80 exam marks - a quarter of the paper. Geometry came next with 15, then Trigonometry with 12. Statistics and Probability had 11, and Mensuration 10. Coordinate Geometry and Number Systems had 6 each.

Those are exactly the unit marks in CBSE's Maths curriculum for 2025-26, the session that led to the 2026 exam. That table is CBSE's blueprint - its plan of marks for each unit. Class 10 unit-wise weightage for Maths and Science lists the chapters inside each unit.

In this paper, both versions of every OR sat in the same unit and the same chapter. So a unit's exam marks stayed the same whichever version you picked. The choice changed the question, never the topic.

On this paper, an OR choice could give you a friendlier question. It could not let you skip a chapter.

Statistics and Probability had no choice at all. All 11 marks were compulsory. The table below gives the chapter-wise marks, one level down from the units.

Was the Maths Basic 2026 paper difficult?

By our own rating, most of its marks were easy or medium. But the hardest marks were compulsory. These ratings are our editorial estimates of the questions. They are not results from any student.

Of the 106 marks printed, we rated 41 easy, 54 medium and 11 difficult. In any 80-mark attempt, easy marks come to 28 to 41, and medium marks to 28 to 41. The difficult marks are always 11. These ranges are separate, so the top of each cannot happen in one attempt.

The 11 difficult marks are Q29, Q30 and Q33. All three are proofs, and none has an OR version. Q29 is about tangents to a circle, Q30 is a trigonometry identity, and Q33 is a theorem about triangles.

We also rated what kind of thinking each part asks for. We use four plain labels:

• Recall: remember a fact or result you already know.
• Apply: pick a method and use it on the numbers given.
• Relate: link ideas together, or explain why a result follows.
• Create: build a graph or diagram as the main task.

The 7 Create marks sit only in OR versions that ask for a drawing: Q24(b), Q28(a) and Q36(iii)(a). You may pick none of them. The compulsory proofs still need clear reasons at every step.

The grid below puts the two ratings together. Read down for difficulty and across for the kind of thinking. Each number is marks printed, not a count of students or a predicted score.

Take one cell: Medium and Apply meet at 24 marks. Those parts ask you to use a method at a moderate level. Q25 is one - it needs a sector's area and a triangle's area.

Section E's case studies test competency-based questions - using maths on a new situation, not recalling a textbook answer. Case-based and competency questions explained shows how a 4-mark case study is built.

How should you plan the three hours?

Our estimate is that the questions take 130.5 to 140 minutes. That leaves 40 to 49.5 of the 180 writing minutes for checking. It is our estimate, not a promise of anyone's speed.

Your own pace is what counts. Time yourself on a full practice paper, such as CBSE's Maths Basic sample paper for 2026-27, and adjust the plan. Managing time in the 3-hour paper shows how to do that.

What changed from earlier years?

The 2023, 2024 and 2026 Basic papers in our collection share one format. Each had 38 questions and 80 marks in three hours. Each had five sections worth 20, 10, 18, 20 and 12 marks, with three 4-mark case studies.

The 2022 paper was a Term 2 test of 40 marks, so it is not a fair match for a full 80-mark paper. Its questions are still useful practice. A format that stays the same does not mean the difficulty stayed the same - we make no claim about that.

Earlier full papers help you practise pace and the switch between short answers, proofs and long sums. For the 2025 Maths Standard paper read the same way, see decoding the CBSE Class 10 Maths 2025 paper. To download this paper, find the Maths Basic 2026 paper in our paper library. Which Class 10 papers we cover lists every year and subject in it.

What are the key takeaways from this paper?

These twelve points describe Maths Basic 2026, set 430/1/1 only - not every CBSE set or year.

• Choices did not remove a topic. Every topic in our table appears in every valid attempt. You answer 54 marks with no choice and pick another 26 through nine OR pairs.
• The hardest-rated questions were compulsory. We rated Q29, Q30 and Q33 difficult, 11 marks together. All three are proofs with no OR version. Practise saying why each step follows.
• Algebra carried a quarter of the marks. Its 20 exam marks covered quadratic equations, linear equations, polynomials and arithmetic progressions. Prepare all four, since the choices remove none of them.
• A familiar diagram still needed a careful read. Q8 needs the right matching corners of two triangles. Q12 asks for an angle of depression - the angle you look down from the level line. Q13 asks for the edge of a shaded region. Read the labels before using a formula.
• Some OR versions asked for a drawing. Q24(b) asks you to prove a result with a drawn triangle. Q28(a) asks for a graph, and Q36(iii)(a) for a diagram. Pick these only if you can finish the drawing.
• Only 20 of the 80 marks let you pick from given answers. The other 60 marks needed your own written working. Practice at spotting the right option alone will not finish this paper.
• Statistics and Probability had no choice. Its 11 marks included reading a table, a grouped mean and a changed probability question. Practise picking the right measure and counting the new total.
• The second probability sum used a new total. Q31, the pens question, mixes a second lot of pens into the first. The second answer uses 300 pens, not 200. Re-read what has changed before you put numbers in.
• The case studies used three kinds of maths. The ladder uses trigonometry, the saplings use arithmetic progressions, and the park uses coordinates. Together they carry 12 marks. Start by naming the quantities you need.
• Use the values the question gives. Q25 says to use 3.14 for pi and 1.73 for the square root of 3. That overrides the general pi rule for that question.
• Check your own pace before you plan. Our estimate leaves 40 to 49.5 of the 180 minutes for checking. It is not a promise of speed. Timed practice shows how much checking time you really have.
• Find the cause of each lost mark. A forgotten theorem needs different help from a misread radius or a sum slip. Look at the working before choosing what to practise. How step marking splits the marks in an answer explains why the working matters.

What does the paper itself tell you to do?

These five points come from the instructions printed on set 430/1/1. Where another paper's instructions differ, follow the paper in front of you.

• Check the paper and write its code. This set has 27 printed pages and 38 questions. Write the code 430/1/1 on the title page of your answer book.
• Use the reading time only to read. The first 15 minutes are for reading the question paper. You may not write any answer then.
• Number every answer. Write the question number before you start each answer, with the part, such as 36(iii).
• Follow the internal choices. Every question number is compulsory. Where OR is printed, answer one version only, and do not skip a whole section.
• Draw neatly and use the given values. Draw neat diagrams where needed. Use 22/7 for pi unless the question says otherwise, as Q25 does. Calculators are not allowed.

The examiner follows CBSE's marking scheme, which gives marks for each correct step - that is step marking. How to write answers to get full marks shows how to lay out working the examiner can follow.

Why can two children with the same marks need different help?

Because the same total can hide opposite mark-loss. Here is a made-up example from our report. Student A and Student B are not real, and neither are their marks.

Both score 58 out of 80, so each loses 22 marks. Student A loses 18 marks to methods not yet learnt and 4 to slips. Student B loses only 4 to missing methods, but 18 to slips.

A slip is a lost mark on work the child knew - a sign error, a missing label, an unfinished step. A missing method is something not yet learnt. Student A needs the missed methods taught. Student B needs practice in finishing every part and checking it.

On this paper, look closely at Q31 and Q33. In Q31, tell a sum slip apart from using the old total of 200 pens. In Q33, check the reasons given for the parallel sides, not just the picture.

Only a child's own answer sheet shows which pattern is theirs. Put it beside the paper, and note for each lost mark the question part and what went wrong. Then pick the first two or three things to practise.

What do these numbers not tell you?

They do not tell you how any child did. No answer sheet was read for this article, and no number here counts children. The marks, questions and choices are counted from the paper. The difficulty, thinking type and minutes are our estimates.

Everything here is about one set, 430/1/1. Other 2026 sets had their own questions. For all seven 2026 papers we read, see the 2026 board season by the numbers. If you are still choosing a level, Maths Basic or Standard: which to take sets out the difference between Maths Basic and Maths Standard.

How the four main Class 10 papers are built - sections, marks and choice - is set out in the CBSE Class 10 exam pattern for 2026-27.

About the author

Mohit Sardana

Chief Architect

An engineer (B.Tech, Computer Science) with over 20 years of preparing students for entrance exams, including as Dean at FIITJEE and Vice-President at Aakash. He is the chief architect of the TRUpreBoards evaluation engine.

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