Unit 2 Lesson 2: Exercise 1

1) Write all the prime numbers between 1 and 10.

2) Write all the composite numbers between 1 and 10.

3) Write any two prime numbers between 20 and 30.

4) Write any two composite numbers between 20 and 30.

5) Is 63 a prime or composite number?

6) Is thirteen prime or composite?

7) Is one hundred and one prime or composite?

8) 18 is a composite number, true or false?

9) Which of these numbers is a prime number, 25 and 61?

10) Choose and circle all the composite numbers, 26, 5, 15, 32, 19 and 200.

11) Choose and circle all the prime numbers, 23, 49, 96, 54, 17 and 11.