Thursday 9 May 2013

Four to Seven

Hello maths group today we tried to complete this starter but we were unable to find a way to make; 5, 6, 15, 16 or 20! (A different 20 than is already shown). Your challenge is to see if you can find a way to make these answers. Good luck
 
 

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3 comments:

  1. Unknown14 May 2013 at 18:18

    15=5(6+4 -7)
    16=4 (6+5-7)

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  2. Viktor Z14 May 2013 at 19:54

    5. 7-6 =1 1+4=5
    6.4+7=11 11-5=6
    15. 5+4+6=15
    16. 4+5+7=16
    20. 4*5=20

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  3. Unknown15 May 2013 at 21:48

    Answers: 15 = 5(6 + 4 - 7),
    16 = 4(6 + 5 - 7), 20 = 4(7 - 6) x 5.

    Sorry, I was unable to find answers 5 and 6.

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