9:50 Puzzle

Can you make this statement true by adding just one small line?

Nine Fifty

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Topics: Starter | Puzzles

  • Carol Lowry, Sheffield Park Academy
  •  
  • Make this sum correct by adding one straight line

    5+5+5=550


    Answer 545+5=550
    Many others similar of course!
  • R Rees,
  •  
  • One pupil did 10 10 10 ≠ 9:50 which I thought was excellent.
  • Millicent, Martham Primary School
  •  
  • This was a big brain teaser it made me work really had but I did it in the end. I think that you should try this one because it really gets you going for the rest of the day!!!
  • Paul Trickett, Prt1960@hotmail.com
  •  
  • My Puzzle is as follows....
    Move one Digit in this sum to make it correct...
    103 - 102 = 3
    Ans.....
    103 - 102 = 3.

    Great idea Paul. It has been created as an animation below. Transum
  • Prince Of Maths, West Yorkshire
  •  
  • Once, there was a prince called Bob. His father said to him:-
    I rode into town on Friday, stayed for 3 days, and rode back out on Friday, how did I do it?
  • S2 Maths Class Holyrood, Holyrood Secondary
  •  
  • Qaisar solved this in two seconds. We all thought this was great!! Mrs Boussouara's S2 maths class rules!!R.O.F.L.
  • Rhys, Barclay Primary
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  • How do you make this true. 1-1=2 just one line
    A. 1+1 =2.
  • , Emily
  •  
  • 103-2=11
    Move one number
    A: 13-2=11.
  • Kieran, Icknield
  •  
  • Can you find the right answer, by moving 1 line?
    56-42+72=26
    56+42-72=26
    what do you think?
  • Maths N Laughs, Yate, S Glos
  •  
  • How about this one,
    The solution to sinx = nx is x = 6, can you work out how?
    The answer is to simply divide both sides by n:
    si x = x
    :)
    A little maths joke I hope you agree!
  • Rebecca Wathen, Worfield Primary School
  •  
  • 0.5 = 1 - 2
    Move two items in this number sentence to make it correct.
    Answer 0.5 = 1/2.
  • Reilly Stallard-Gorton, Worfield
  •  
  • 103 + 104 = 1207
    Move 1 number to make this true.
    You have to move the 1 from the instructions to the beginning of the calculation!
    1103 + 104 = 1207.
  • Matthew Zhao, Year 7, Brisbane Boys' College, Toowong, Brisbane
  •  
  • I have a maths puzzle:
    41+1=25
    You are allowed to rub out only 1 part anywhere in the sum.
    Answer:
    4!+1=25.
  • Ramesh P, APL Global School
  •  
  • One of my students in grade IX gave the correct solution.

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Answers

Can you make up a puzzle like this? An equation or identity which is not true but can be made true by adding a line or a point. Your puzzle can be featured on this page. Enter your puzzle here.

Extension 1: Move One Number

103 − 102 = 3

Can you move just one number to make the statement above correct?

Extension 2: Move One Item

0.5 = 1Minus2

Can you move just one item to make the statement above correct?

Extension 3: Move One Digit

19 − 11 = 1108

Can you move just one digit to make the statement above correct?



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