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
click the bits to set them012806403201608040201

Set the bits so the 8-bit register holds 0x73. What is the pattern's value N in decimal?

0x73
N =
2.Easy
click the bits to set them012806403201608040201

Set the bits so the 8-bit register holds 0xC6. What is the pattern's value N in decimal?

0xC6
N =
3.Medium
8-bit two's complement0−12806403201608040201

Set the bits so they store −72 in 8-bit two's complement. Read as an unsigned number, what is the pattern's value U?

N = −728 bit
U =
4.Medium
place values in two's complement1−12806413201618041211

The 8-bit pattern 1010 1011 stores a signed integer in two's complement. What is its value N in decimal?

1010 10118 bit
N =
5.Hard
click the bits to set them012806403201608040201

Set the bits to the 8-bit result of 1000 0000 >> 2. What is the result's value R in decimal?

1000 0000>> 2
R =
6.Hard
click the bits to set them012806403201608040201

Set the bits to the 8-bit result of 1011 0110 OR 1111 0111. What is the result's value R in decimal?

1011 0110OR1111 0111
R =

Answer key

  1. 1. N = 115
  2. 2. N = 198
  3. 3. U = 184
  4. 4. N = −85
  5. 5. R = 32
  6. 6. R = 247

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