Unit 4 Lesson 2: Exercise 1

1) Write all the prime numbers between 50 and 70.

2)  Write all the composite numbers between 50 and 80.

3) Write any two prime numbers between 800 and 1000.

4)  Write any two composite numbers between 800 and 1000.

 5) Is 643 a prime or composite number?

6)  Is one hundred and thirteen prime or composite?

7)  Is Nine hundred and ninety one prime or composite?

8) 180 is a composite number, true or false?

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

10) choose all the composite numbers, 206, 51, 150, 342, 129 and 200.