Binary Math Practice Exercises

Test your binary math skills with these practice problems and exercises.

Click the dropdown menus to see the answers.

Examples are available on the other pages with step-by-step explanations if you need any clarification. The helpful hints and reminders are good to keep in mind, and should make the math much easier.

Binary Addition

**Reminder: 1 + 1 = 10**

Questions

1. 101 + 11 =
2. 111 + 111 =
3. 1010 + 1010 =
4. 11101 + 1010 =
5. 11111 + 11111 =

Answers 1-5 1. 1000 2. 1110 3. 10100 4. 100111 5. 111110

Binary Subtraction

**Reminder: 10 - 1 = 1**

Questions

6. 110 - 10 =
7. 101 - 11 =
8. 1001 - 11 =
9. 1101 - 11 =
10. 10001 - 100 =

Answers 6-10 6. 100 7. 10 8. 110 9. 1010 10. 1101

Binary Multiplication

**Hint: very similar to decimal multiplication**

Questions

11. 10 x 10 =
12. 100 x 11 =
13. 101 x 10 =
14. 1011 x 11 =
15. 11011 x 101 =

Answers 11-15 11. 100 12. 1100 13. 1010 14. 100001 15. 10000111

Binary Division

**Hint: very similar to decimal division**

Questions

16. 100 / 10 =
17. 111 / 11 =
18. 1010 / 100 =
19. 1101 / 11 =
20. 10111 / 10 =

Answers 16-20 16. 10 17. 10 R=1 18. 10 R=10 19. 100 R=1 20. 1011 R=1

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