Morris Mano Edition 3 Exercise 1 Question 16 (Page No. 33)

Question

perform the subtraction with the following unsigned decimal numbers by taking the 10’s complement of the subtrahend

1. 5250 -1321
2. 1753 – 8640
3. 20 -100
4. 1200 -250 

Answer 1

Step1 Find 10's complement of the subtrahend 1321.

9999-1321=8678

8678+1=8679

5250+8679=13929

Discard the carry from 13929 and we get the right answer which is 3929.