Number systems worksheet with answers

Free printable Number systems worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy
place values7256E1621

Convert the hexadecimal number 0x7E2 to decimal. Find N.

0x7E2A = 10 … F = 15
N =
2.Easy
place values7256616C1

Convert the hexadecimal number 0x76C to decimal. Find N.

0x76CA = 10 … F = 15
N =
3.Medium
place values in two's complement1−12806403211608140211

The 8-bit pattern 1001 0101 stores a signed integer in two's complement. What is its value N in decimal?

1001 01018 bit
N =
4.Medium
place values in two's complement1−12816413211608141201

The 8-bit pattern 1111 0110 stores a signed integer in two's complement. What is its value N in decimal?

1111 01108 bit
N =
5.Hard
click the bits to set them012806403201608040201

Set the bits to the 8-bit result of 0001 0100 << 2. What is the result's value R in decimal?

0001 0100<< 2
R =
6.Hard
click the bits to set them012806403201608040201

Set the bits to the 8-bit result of 1011 1001 >> 2. What is the result's value R in decimal?

1011 1001>> 2
R =

Answer key

  1. 1. N = 2018
  2. 2. N = 1900
  3. 3. N = −107
  4. 4. N = −10
  5. 5. R = 80
  6. 6. R = 46

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