Mastering Number Bases

Convert the binary number 101101 to decimal.

• 45

• 25

• 60

• 30

Convert the decimal number 45 to binary.

• 101010

• 110101

• 100111

• 101101

Convert the hexadecimal number 2F to decimal.

• 30

• 50

• 45

• 47

Convert the octal number 57 to decimal.

• 57

• 47

• 50

• 45

Add the binary numbers 1101 and 1011.

• 11000

• 10010

• 11001

• 11100

Subtract the binary number 1010 from 1101.

• 1000

• 0011

• 1110

• 0101

Subtract the octal number 25 from 37.

• 10

• 15

• 12

• 20

Multiply the binary numbers 101 and 11.

• 1010

• 1100

• 1111

• 1001

Multiply the decimal numbers 6 and 7 in binary.

• 110010

• 100101

• 101011

• 100110

Convert the binary number 111000 to octal.

• 100

• 80

• 70

• 60