The last 30 days before the Class 12 Maths exam
A month is enough to fix the chapters that cost you marks, if you find them first. Here is the plan, week by week, with a daily timetable.
The last 30 days, week by week
Count back from the date of your maths paper. Take the date from CBSE's date sheet or your school: CBSE had not published the 2027 date sheet when we last checked, so we give no date here (see CBSE's circulars).
| When | Focus | What to do |
|---|---|---|
| Days 30 to 24 | Find the gaps | Sit one full paper, 3 hours, closed book, on day 30 (CBSE's 2026-27 sample paper or one of ours). Mark it against the scheme the same day. Start a mark-loss log: every lost mark, its chapter and its section (A to E). Then rate every chapter red, amber or green. |
| Days 23 to 17 | Fix the reds | Two or three red chapters at a time, biggest losses first. Read the chapter notes, then the Route to 95 step 2 and 3 questions until you get them right without the solution. Learn the standard results and proof types on the list. 30 minutes of mixed questions from green chapters each day. |
| Days 16 to 10 | Full papers | A full timed paper every other day (three or four in all), each marked the same day and added to the log. Redo every lost mark two days later. Include a past CBSE board paper. Spend the days in between on Calculus (35 of the 80 marks). |
| Days 9 to 3 | Sharpen | Competency-based and case-study questions from every chapter, timed Section A sets of twenty 1-mark questions, and the 5-mark answers you lost marks on. Read the formula sheet once a day. |
| Days 2 to 1 | Consolidate | No new topics. Formula sheet, theorem and identity statements, and one read of your mark-loss log. Pack the geometry box and pens; no calculator is allowed. Sleep at your usual time. |
A daily revision timetable for maths
On a day without a full paper, about two hours of maths in three blocks, alongside your other subjects. On paper days, the paper and its marking replace the blocks.
| Block | What |
|---|---|
| Block 1 (about 60 minutes) | Fix: one red or amber chapter, notes then questions, marking your working against the scheme. |
| Break (10 to 15 minutes) | Away from the desk. |
| Block 2 (about 45 minutes) | Mixed: questions from three chapters you finished earlier, closed book. |
| Block 3 (about 15 minutes) | Log: write today's lost marks in the mark-loss log, and read the formula sheet. |
Want it day by day with your own dates? Enter your exam date in the study planner and it lays out the days for you; tick them off as you go.
The mark-loss log: an example
One line for every mark lost in a marked paper. After two or three papers the pattern shows which chapters to fix first.
| Question | Chapter | Section | Marks lost | Why |
|---|---|---|---|---|
| Q24 | Continuity and Differentiability | B | 1 | Stopped at (1/y) dy/dx |
| Q31 | Application of Integrals | C | 1 | No sketch of the region |
| Q36(iii) | Application of Derivatives | E | 1 | No second-derivative check for the maximum |
An illustration: the question numbers and losses are made up to show the format. The step-marking guide shows where each of these marks comes from.
Where the practice comes from
- Full papers: our Class 12 sample papers (3-hour timer, full step-marking scheme) and CBSE's own sample paper and past board papers on our question papers page.
- Fixing a chapter: the chapter's notes and four-step Route to 95, with checkpoints.
- Section A and case studies: free MCQs and case studies for every chapter, and the competency-based questions guide.
- Formulas: the Class 12 formula sheet (free PDF).
- Timed chapter tests with new questions each time: timed tests (CBSE Essentials or the free trial).
Preparing for the supplementary exam instead?
See the supplementary exam guide: what CBSE has published and a plan for the weeks before it.
Questions students ask
How many hours a day should I study maths in the last 30 days?
About two hours on most days is enough for maths alongside your other subjects, plus a full 3-hour paper every other day in the third week. What matters more is that every lost mark goes in your log and gets redone.
Should I start new topics in the last month?
Only if a chapter is completely untouched, and then the standard questions first. In the last two days, start nothing new: revise formulas, statements and your mark-loss log.
When is the 2027 Class 12 maths board exam?
Not yet published: CBSE had not published the 2027 date sheet when we last checked (5 October 2026). It will appear on CBSE's examination circulars page; your school will also share it.
Official facts on this page were last checked against CBSE's own documents on 5 October 2026. CBSE Math Revision is independent and not affiliated with CBSE or NCERT. If a newer CBSE notice or your school says something different, follow CBSE and the school. Worked examples are written by CBSE Math Revision and checked twice (by computer algebra and by hand); the mark splits are our illustration, not CBSE's scheme for any paper.