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 0xF4. What is the pattern's value N in decimal?

0xF4
N =
2.Easy
click the bits to set them012806403201608040201

Set the bits so the 8-bit register holds 0x3B. What is the pattern's value N in decimal?

0x3B
N =
3.Medium
8-bit two's complement0−12806403201608040201

Set the bits so they store −83 in 8-bit two's complement. Read as an unsigned number, what is the pattern's value U?

N = −838 bit
U =
4.Medium
8-bit two's complement0−12806403201608040201

Set the bits so they store −32 in 8-bit two's complement. Read as an unsigned number, what is the pattern's value U?

N = −328 bit
U =
5.Hard
click the bits to set them012806403201608040201

Set the bits to the 8-bit result of 0011 0110 >> 1. What is the result's value R in decimal?

0011 0110>> 1
R =
6.Hard
click the bits to set them012806403201608040201

Set the bits to the 8-bit result of 1011 0100 OR 0101 1100. What is the result's value R in decimal?

1011 0100OR0101 1100
R =

Answer key

  1. 1. N = 244
  2. 2. N = 59
  3. 3. U = 173
  4. 4. U = 224
  5. 5. R = 27
  6. 6. R = 252

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