Beginner:

1. Write down all the even numbers between 1 and 20.

2. Write down all the odd numbers between 10 and 30.

3. Circle the even numbers:
   5, 8, 11, 14, 17, 20

4. Circle the odd numbers:
   2, 3, 7, 10, 15, 18

5. Is 12 an even or odd number?

6. Is 21 an even or odd number?

7. Fill in the blanks:

   • 2, 4, , 8, , 12

   • 1, , 5, , 9, __

Intermediate:

1. Write the next three even numbers after 26.

2. Write the next three odd numbers after 31.

3. Which of these numbers are even?
   33, 44, 56, 67, 78, 89

4. Add the even numbers:
   4, 10, 22

5. Add the odd numbers:
   7, 15, 19

6. True or False: All numbers divisible by 2 are even.

7. Fill in the blanks:

   • 10 + 8 = ___ (Even or Odd?)

   • 15 + 9 = ___ (Even or Odd?)

Advanced:

1. Write a rule to determine if a number is even or odd.

2. Find the sum of all even numbers between 1 and 50.

3. Find the sum of all odd numbers between 1 and 50.

4. If you multiply an even number by an odd number, is the result even or odd?

5. If you add two even numbers, is the result even or odd? Prove with an example.

6. If you add two odd numbers, is the result even or odd? Prove with an example.

7. Which of these numbers is divisible by 2?
   18, 23, 40, 55, 62, 77

End of Worksheet

Answers

Worksheet: Even and odd numbers