# Converting hexadecimal numbers

### GCSE COMPUTING

## Converting Hexadecimal into decimal numbers

1. Hexadecimal numbers have some simularities to decimal numbers however, past the number 9 is represented using A,B,C,D,E,F.

2. For example using the number 35 (Base 16) we are going to convert this number into a decimal (base 10) number. First we multiply the number in the tenth collum by 16 therefore 16x3=48 and then we take the number from the units collum and then multiply it by 1 therefore 5x1=5 so we add together the numbers 48 and 5 which is 53. This is the method you use for converting hexadecimal (Base 16) numbers into decimal (base 10) numbers.

## Converting Binary numbers into hexadecimal numbers

1.binary numbers are represented using 8 bit, 16 bit, 32 bit and 64 bit.

2. For example using the 8 bit binary number 10010110