Binary

[Dan2nd]

I really suck at binary and I need to work out these sums and show the working but the answers keep coming out wrong:

00001111 + 00000011 = 00010000
00001111 – 00000011 = 00001100
00001111 * 00000011 = 00101101
00001111 / 00000011 = 00000101

00011001 + 00000101 = 00011001
00011001 – 00000101 = 00011110
00011001 * 00000101 = 011111101
00011001 / 00000101 = 00000101

00011100 + 00000100 = 00100000
00011100 – 00000100 = 00011000
00011100 * 00000100 = 01110000
00011100 / 00000100 = 00000111

Can anyone give me a bit of help?

EDIT: oh yeh I got the answers using a calculater I thought if I knew the answers first it would be easier to work out

[piddle2k6]

i cant really help... to be honest i never understood it..Try going on a (i know this osunds steriotypical) but a nerdy computer site and just right it in there shout bit if they have one.They are sure to help

[Mentor]

For lazyness purposes you may just want to convert em to standard deanary do the math then reconvert em to binary format "/

[Dan2nd]

ok I get everything excdept the division now it also dosn't help I suck at long division with normal numbers :l