Well, 14+5 decimal = 19 decimal = 3 Hex and carry the one (i.e. 13 Hex). Go from there. ... T

Solved

Posted on 2008-11-08

Hi, this is a hexadecimal addtion.

Hex:

3 A E

+ 1 F 5

--------

5 A 3

looking at the addtion above, if you add E and 5 why does the number become 13?

I thought , E = 14 thus it should be 14+5 = 19.

but I guess I'm wrong. can you please explain.

Hex:

3 A E

+ 1 F 5

--------

5 A 3

looking at the addtion above, if you add E and 5 why does the number become 13?

I thought , E = 14 thus it should be 14+5 = 19.

but I guess I'm wrong. can you please explain.

9 Comments

3 A E

+ 1 F 5

-----

Stage 2:

1

3 A E

+ 1 F 5

-----

3

Stage 3:

1 1

3 A E

+ 1 F 5

-----

A 3

Stage 4:

1 1

3 A E

+ 1 F 5

-----

5 A 3

Stage 1:

E + 5 = 13

So we carry "1" to the next stage

Stage 2:

1 + A + F = B + F = 1A

So we carry "1" to the next stage

Stage 3:

1 + 3 + 1 = 5

hongjun

Because hex 13 is dec 19

Where decimal values "roll over" to the next power at 10, hexadecimal rolls over at 16.

One in the 16s place and 3 in the 1s place.

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