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 0x3F. What is the pattern's value N in decimal?

0x3F
N =
2.Easy
click the bits to set them012806403201608040201

Set the bits so the 8-bit register holds 0x97. What is the pattern's value N in decimal?

0x97
N =
3.Medium
8-bit two's complement0−12806403201608040201

Set the bits so they store −68 in 8-bit two's complement. Read as an unsigned number, what is the pattern's value U?

N = −688 bit
U =
4.Medium
8-bit two's complement0−12806403201608040201

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

N = −88 bit
U =
5.Hard
click the bits to set them012806403201608040201

Set the bits to the 8-bit result of 1001 1100 >> 3. What is the result's value R in decimal?

1001 1100>> 3
R =
6.Hard
click the bits to set them012806403201608040201

Set the bits to the 8-bit result of 0001 1101 AND 0110 0110. What is the result's value R in decimal?

0001 1101AND0110 0110
R =

Answer key

  1. 1. N = 63
  2. 2. N = 151
  3. 3. U = 188
  4. 4. U = 248
  5. 5. R = 19
  6. 6. R = 4

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