Are you giving Board Exams in March 2020?
Then you have come to the right place!
We have talked about which paper to choose  Maths Basic vs Maths Standard
The CBSE Maths Standard Sample Paper  Class 12 for 2020 Boards has been summarised here.
We will see how many questions are there, how many marks per chapter and some tips for your board exams.
Sections
Section 
How many marks? 
Number of Questions 
Total Marks 
Section A 
1 marks each 
20 
1 × 20 = 20 
Section B 
2 marks each 
6 
2 × 6 = 12 
Section C 
3 marks each 
8 
3 × 8 = 24 
Section D 
4 marks each 
6 
4 × 6 = 24 
Total 

30 questions 
80 marks 
Total marks is 100, out which 20 marks is Internal Assessment  which is sent by your school to CBSE
Marks per Chapter
According to CBSE Syllabus, the marks per unit is like this
Units 
Chapters of NCERT 
Marks 

I. 
Number System 
Chapter 1 
6 
II. 
Algebra 
Chapter 2, 3, 4, 5 
20 
III. 
Coordinate Geometry 
Chapter 7 
6 
IV. 
Geometry 
Chapter 6, 10, 11 
15 
V. 
Trigonometry 
Chapter 8, 9 
12 
VI. 
Mensuration 
Chapter 12, 13 
10 
VII. 
Statistics & Probability 
Chapter 14, 15 
11 

Total 

80 
In this sample paper,
marks per chapter is
Chapter 
1 Mark Questions 
2 Mark Questions 
3 Mark Questions 
4 Mark Questions 
Total Marks 
Chapter 1  Real Numbers 
3 
1 
6 

Chapter 2  Polynomials 
1 
1 
4 

Chapter 3  Pair of Linear Equations in Two Variables 
1 
1 
4 

Chapter 4  Quadratic Equations 
1 
1 
5 

Chapter 5  Arithmetic Progressions (AP) 
2 
1 
1 
7 

Chapter 6  Triangles 
2 
1 
1 
8 

Chapter 7  Coordinate Geometry 
3 
1 
6 

Chapter 8  Trigonometry 
3 
1 
6 

Chapter 9  Applications of Trigonometry (Heights and Distances) 
1 
1 
6 

Chapter 10  Circles 
1 
1 
3 

Chapter 11  Constructions 
1 
4 

Chapter 12  Areas related to circle 
1 
3 

Chapter 13  Surface Area and Volume 
2 
1 
1 
8 

Chapter 14  Statistics 
1 
1 
1 
8 

Chapter 15  Probability 
1 
2 

Total 
80 
There are total 2 + 2 + 3 + 3 = 10 OR Questions.
Important Points to Note

NCERT Questions are Very important  3 Questions have come
straight from NCERT Book.

10 Questions are very similar to the questions in the NCERT Book
. Just values are changed

1 mark question has 10 Multiple Choice Questions, 5 Fill in the Blanks and 5 answering questions

In Answering questions, there is step marking. In MCQ and Fill in the blanks, no step marking

When cancelling square roots, don't forget to write
plusminus sign ±

Writing units is important or half marks is cut, eg: x =3 is wrong, x = 3 metre is right.

Formula of all chapters has 1/2 marks

Formula of Statistics (Chapter 14) has 1 mark

In Chapter 9 Heights and Distances, 1 mark is given for correct figure

1 Question of Theorem will come. (Of Chapter 6 or 10)

1 4Marks question of Construction will come

Remember the formula for Length of an arc (Chapter 12)
Length of arc = θ/360 × 2πr
It is used when length of arc is given, and we need to find angle

In questions where the answer can be found easily (like finding curved surface area of frustum if height and radius is given), calculation is difficult. 1 mark will be deducted if you have not found the exact answer

All questions of the Sample Paper has been solved, with marking scheme also given of each and every step. Click next to start doing the questions
Tips for CBSE Boards 2020

Do the chapters from the Concept wise. Check out the video below

Remember all the Theorems and their proofs.

Remember all formulas of all Chapters. Formula sheet is provided for all chapters

Important questions have been marked in all chapters. Check them while revising

It is important to Revise the topics from
Concept wise
. Just check the theory, and the questions in order they are given

Make sure you have 2 pencils, 1 compass, scale, eraser, sharpener with you in the geometry box

Make sure you do atleast this year's sample paper.
 Do not miss any steps. Write each and every step possible.
Have anything else? Comment below to tell me.
All the best!