1. Similar to binary addition, in subtraction, we work through the numbers, column by column, starting on the far right. Instead of carrying forward however, we will borrow backwards (when necessary).

2. Which of the following rules of Binary Subtraction is INCORRECT?

3. Analyse this approach to subtraction carefully. What is being utilised?

4. Refer to the image below. What happens in step 4?

5. How would you subtract a bigger number from a smaller number?

6. If you want to multiply 5 by 4 you could say this is the same as_____________

7. If you wanted to multiply 3 by 2, you could add 3, two times, but when you multiply _________________

8. The rules of multiplication (binary) tell us that 0*0 = 1 and 0*1 = 0

9. In Binary 1*1 = 11 and 1*0 = 0

10. What is the binary value of multiplying the binary numbers 10 x 10?

11. What is the binary value of multiplying the binary numbers 110 x 11?

12. What is the binary value of multiplying the binary numbers 01 x 10?

13. What is the binary value given by performing the following (give your answer in four bits) 0011 - 0010 = ?

14. What is the binary value given by performing the following (give your answer in four bits) 1111 - 111 = ?

15. What is the binary value given by performing the following: 01 - 11?

16. What are the different representations that can be used for signed integers?

17. There is only one representation for the number zero in two's complement instead of two representations in sign-magnitude and one's complement.

18. What is the following example demonstrating?

19. Which of the following statements best describes what is happening in the below example?

20. Which statement best describes what is occuring in the following example?