# CBSE Class 6 Maths Activity 2

Read and download CBSE Class 6 Maths Activity 2 chapter in NCERT book for Class 6 Mathematics. You can download latest NCERT eBooks for 2022 chapter wise in PDF format free from Studiestoday.com. This Mathematics textbook for Class 6 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 6 Mathematics to understand the answers of the exercise questions given at the end of this chapter

## Activity 2 Class 6 Mathematics NCERT

Class 6 Mathematics students should refer to the following NCERT Book chapter Activity 2 in standard 6. This NCERT Book for Grade 6 Mathematics will be very useful for exams and help you to score good marks

### Activity 2 NCERT Class 6

To find prime numbers between 1 to 100 by Eratosthenes Sieve's method.

Learning Objective : To list prime numbers between 1 to 100.

Pre-requisite : Knowledge of factors and multiples.

Materials Required : A grid paper / squared paper, sketch pens.

Procedure :

Step 1. Take a grid paper/squared paper and cutout a 10 x 10 square from it.

Step 2. Write numbers from 1 to 100 in this grid as shown in Fig. 2(a).

Step 3. Colour the box with number 1 with any colour say blue as shown in Fig 2(a).

Step 4. Now en circle the number 2 with green colour, as it is a prime number.

Step 5. Next, cross all the multiples of 2 with red colour as shown in Fig. 2(b).

Step 6. Next, encircle the number 3 (prime number) with green colour and cross all multiples of 3 by red colour as shown in Fig. 2(c)

Step 7. Encircle the next prime number 5 with green colour and cross all it's multiples by red colour.

Step 8. Encircle the next prime number 7 with green colour and cross all it's multiples by red colour.

Step 9. Continue with this process till all the numbers are either encircled (prime numbers) or crossed to obtain Eratosthenes sieve.

Please refer to the link below - CBSE Class 6 Maths Activity 2

 NCERT Class 6 Maths Knowing our Numbers
 NCERT Class 6 Maths Mensuration
 NCERT Class 6 Maths Algebra
 NCERT Class 6 Maths Ratio and Proportion
 NCERT Class 6 Maths Symmetry
 NCERT Class 6 Maths Practical Geometry
 NCERT Class 6 Maths Whole Numbers
 NCERT Class 6 Maths Playing with Numbers
 NCERT Class 6 Maths Basic Geometrical Ideas
 NCERT Class 6 Maths Understanding Elementary Shapes
 NCERT Class 6 Maths Integers
 NCERT Class 6 Maths Fractions
 NCERT Class 6 Maths Decimals
 NCERT Class 6 Maths Data Handling
 NCERT Class 6 Maths Answers to all Chapters
 NCERT Class 6 Maths Brain Teasers