How can i subtract or add two hexadecimal, octal and binary numbers?

Question

I need this immediately. Thanks

Answer 1

It's just like decimal, however, when you "carry the...", the number you carry is different. In hexadecimal, it's 16; in octal, it's 8 and in binary, it's 2.

Answer 2

binary 101= decimal 5
binary 100 = decimal 4
binary 1001 = decimal 9
0+0 = 0; 0+1 = 1; 1+1 = 0 but carry 1

Octal 67 = 55 decimal
octal 77 = 63 decimall
0ctal 166 = 118 decimal
7+7 = 14-8 = 6 carry 1 = 16
7+6+1 carry = 14-8 = 6 with 1 carry thus giving 166
to convert octal 166 to decimal use this method:
(8*1+6)*8 +6 = 118

Hex 2EF = 751 decimal
Hex FF = 255
Hex 3EE = 1006
F=F = 30 - 16 = 14 carry 1 = E carry 1
F+E+carry 1 = 30-16 = E carry 1
2 + carry 1 = 3 which gives the 3EE

Answer 3

You have two options:
1) convert to decimal, do your operation, and convert back to the other base.

2) Do the arithmetic in the given base. The principle is exactly the same as it is in decimal for subtraction or addition - carry the ones, etc. Just keep in mind what base you're in and don't accidentally apply decimal concepts (e.g. one more than 7 is 10 in octal).

Answer 4

the main easy way may well be to transform lower back to decimal numbers, carry out your calculation, then convert to the gadget in question. in any different case, some calculators will do this for you without wanting to covert (besides the actuality that the calculator is coverting backstage) *or* you may create some addition/multiplication charts for your self such as you probably did once you have been first getting to grasp to multiply decimal numbers. to illustrate, your hex chart might instruct you that 9*C = 6C, so which you will possibly write down the C and carry the 6.

Answer 5

Whatever the column total is, when it is less than the base, put it down and carry zero. When it is more than the base, subtract the base, put down what's left, and carry one.

In hexadecimal, for example: B plus 7 equals eighteen, put down two and carry one. A plus C plus one equals twenty-three, put down 7 and carry one.

In octal: 6 plus 3 is nine, put down one and carry one. 7 plus 5 plus one is thirteen, put down five and carry one.