Number Operation ; Subtraction by Nurul Faizah

1. How to subtract binary number

• Align the two numbers as you would in decimal subtraction.
• Work the columns right to left subtracting in each column. If you must subtract a one from a zero, you need to “borrow” from the left, just as in decimal subtraction.
• One borrow represent 1, so, if 0 - 1 , = 2-1 = 1
• Remember, 0 - 1 = 1 , 10 = 2.

2. How to subtract octal number

• Align the two numbers as you would in decimal subtraction.
• Work the columns right to left subtracting in each column. If you must subtract a one from a smaller number, you need to “borrow” from the left, just as in decimal subtraction.
• One borrow represent 8.
• Add the borrowed value to the smaller value.

3. How to subtract hexadecimal number

• Align the two numbers as you would in decimal subtraction.
• Work the columns right to left subtracting in each column. If you must subtract a one from a smaller number, you need to “borrow” from the left, just as in decimal subtraction.
• One borrow represent 16.
• Add the borrowed value to the smaller value.
• Remember,
• A = 10
• B = 11
• C = 12
• D = 13
• E = 14
• F = 15

by : Nurul Faizah binti Sasaruddin - B031210257