Subtraction using complement 

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1's, 2's, 7's, 8's, 9's, 10's, 15's, 16's Complement Subtraction Method

1.
1's complement subtraction method

Find Subtraction of 10010 and 1101 using 1's complement method
10010  01101 = ??? using 1's Complement 1's Complement of 01101 = 10010 1    1     1  0  0  1  0  +  1  0  0  1  0 
 1  0  0  1  0  0 
Add carry...        0  0  1  0  0  +  0  0  0  0  1 
  0  0  1  0  1 
Final answer = 00101


2.
2's complement subtraction method

Find Subtraction of 10010 and 01101 using 2's complement method
10010  01101 = ??? using 2's Complement 2's Complement of 01101 = 10011 1    1     1  0  0  1  0  +  1  0  0  1  1 
 1  0  0  1  0  1 
Ignore carry... Final answer = 00101



3.
7's complement subtraction method

Find Subtraction of 2120 and 543 using 7's complement method
2120  0543 = ??? using 7's Complement 7's Complement of 0543 = 7234 1       2  1  2  0  +  7  2  3  4 
 1  1  3  5  4 
Add carry...       1  3  5  4  +  0  0  0  1 
  1  3  5  5 
Final answer = 1355


4.
8's complement subtraction method

Find Subtraction of 2120 and 543 using 8's complement method
2120  0543 = ??? using 8's Complement 8's Complement of 0543 = 7235 1       2  1  2  0  +  7  2  3  5 
 1  1  3  5  5 
Ignore carry... Final answer = 1355



5.
9's complement subtraction method

Find Subtraction of 96538 and 9250 using 9's complement method
96538  09250 = ??? using 9's Complement 9's Complement of 09250 = 90749 1   1   1    9  6  5  3  8  +  9  0  7  4  9 
 1  8  7  2  8  7 
Add carry...        8  7  2  8  7  +  0  0  0  0  1 
  8  7  2  8  8 
Final answer = 87288


6.
10's complement subtraction method

Find Subtraction of 96538 and 9250 using 10's complement method
96538  09250 = ??? using 10's Complement 10's Complement of 09250 = 90750 1   1      9  6  5  3  8  +  9  0  7  5  0 
 1  8  7  2  8  8 
Ignore carry... Final answer = 87288



7.
15's complement subtraction method

Find Subtraction of E68D and 74E using 15's complement method
E68D  074E = ??? using 15's Complement 15's Complement of 074E = F8B1 1   1     E  6  8  D  +  F  8  B  1 
 1  D  F  3  E 
Add carry...       D  F  3  E  +  0  0  0  1 
  D  F  3  F 
Final answer = DF3F


8.
16's complement subtraction method

Find Subtraction of E68D and 74E using 16's complement method
E68D  074E = ??? using 16's Complement 16's Complement of 074E = F8B2 1   1     E  6  8  D  +  F  8  B  2 
 1  D  F  3  F 
Ignore carry... Final answer = DF3F



