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Binary shifts and addition

Quiz by GCSE Computer Science Teacher 2

GCSE (AQA)
Computer Science
English National Curriculum

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12 questions
Show answers
  • Q1
    What does it mean to apply a binary shift?
    To multiply or divide a number
    To subtract from a number
    To add to a number
    To move a number in memory
    30s
    3.3.4
  • Q2
    Which direction should the binary digits move if the number is multiplied?
    Up
    Right
    Down
    Left
    30s
    3.3.4
  • Q3
    Which direction should the binary digits move if the number is divided?
    Left
    Down
    Up
    Right
    30s
    3.3.4
  • Q4
    Once the existing digits are shifted left in a binary multiplication, what should fill those spaces?
    It depends on what was there before
    Nothing
    1's
    0's
    30s
    3.3.4
  • Q5
    How many digits must a number shift to get a multiplication or division of 2?
    3
    1
    2
    4
    30s
    3.3.4
  • Q6
    How many digits must a number shift to get a multiplication or division of 4?
    2
    3
    1
    4
    30s
    3.3.4
  • Q7
    How many digits must a number shift to get a multiplication or division of 16?
    2
    3
    4
    1
    30s
    3.3.4
  • Q8
    What would binary number 010011 be after a shift of 2 (left) is applied to it?
    00100101
    01001100
    00101001
    01001111
    60s
    3.3.4
  • Q9
    What term describes not having enough bits to store a newly calculated binary number?
    Logic error
    Overflow
    Run time error
    Syntax Error
    60s
    3.3.4
  • Q10
    What happens when you need to add 1 + 1 together in binary addition?
    Question Image
    You write down 2
    You get an error
    You write down 1 and carry 1 over
    You write down 0, and carry the 1 over
    60s
    3.3.4
  • Q11
    What will happen at the end of this addition?
    Question Image
    You write 1 and add another column
    The last number will default to 1
    There will be an overflow error
    You write 0 and carry the 1
    60s
    3.3.4
  • Q12
    What is the result of the following numbers being added together?
    Question Image
    10000101
    Overflow
    11011100
    10011100
    60s
    3.3.4

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