Watch the video before start the the worksheet
Worksheet
After watching above video, Do the following Problems in your Notebook and send to your teacher.
1. Write Fundamental theorem of Arithmetic.
2. Define Rational numbers and Irrational numbers. Give examples.
3. Express 2020 as a product of prime factors.
4. How will you show (19 x 23 x 11) + (23 x 11 x 2) is composite number.
5. Find LCM of 72 and 108 by prime factorization method.
6. Find LCM of 20, 30 and 50 by prime factorization method.
7. Find HCF of 36 and 90 by prime factorization method.
8. Find HCF of 21, 24 and 27 by prime factorization method.
9. Prove that √2 + √3 is an irrational.
10. What do you say about the digit in units place of 5³².