Tuesday 22 November 2016

Game of cards

This pupil's cards are all different. There is a number from 1 to 8 on each card.

He has chosen four cards that add up to 20. What are they?
There are seven different possibilities.
Try to find them all. 

Challenge
What if he has three cards that add up to 16?
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34 comments:

  1. Ruqayya 6Red7:08 pm, November 23, 2016

    One possible way could be 6,7,4 and 3.These four nunbers add up to 20.

    ReplyDelete
  2. Ruqayya 6Red7:14 pm, November 23, 2016

    Another way is 2+4+5+9.I calculated 2+4=6+5=11+9=20

    ReplyDelete
  3. Ruqayya 6Red7:20 pm, November 23, 2016

    Another way is 7+3+2+8=20.I just try to find number bonds to 20 and use it to find out some possibilities

    ReplyDelete
    Replies
    1. Mr Highman7:45 pm, November 24, 2016

      Super idea Ruqayya. This is an excellent example of how knowledge of number bonds can help you solve problems.

      Delete
  4. Ruqayya 6Red7:59 pm, November 23, 2016

    You can also do 1+8=9+7+4=20

    ReplyDelete
  5. Ruqayya 6Red8:00 pm, November 23, 2016

    I did 5+3=8+6=13+7=20

    ReplyDelete
  6. Ruqayya 6Red8:02 pm, November 23, 2016

    I calculated 6+3=9+7=16+4=20

    ReplyDelete
  7. Ruqayya 6Red8:03 pm, November 23, 2016

    I also found 8+3=11+5=16+4=20

    ReplyDelete
  8. Ruqayya 6Red8:04 pm, November 23, 2016

    I also did 6+7=13+5=18+2=20

    ReplyDelete
  9. Ruqayya 6Red8:05 pm, November 23, 2016

    I had found all 7 possibilities.If I can do it so can you.

    ReplyDelete
  10. Ruqayya 6Red8:06 pm, November 23, 2016

    I had tried the challenge and had gotten 16. I did 7+5=12+4=16

    ReplyDelete
  11. Ruqayya 6Red8:07 pm, November 23, 2016

    I also did 8+2+5+1=16

    ReplyDelete
  12. Ruqayya 6Red8:09 pm, November 23, 2016

    I tried the challenge and calculated 3+4+7+2=16

    ReplyDelete
  13. Lara 6Red8:42 pm, November 23, 2016

    9+1+6+4=20

    6+4+8+2=20

    2+4+6+8=20

    1+7+4+8=20

    All I did was pick 2 number's in between 1-8 and I added them together, then I took the number away from 20.

    ReplyDelete
  14. Ruqayya 6Red9:16 pm, November 23, 2016

    One other way is 7+3+2+8

    ReplyDelete
  15. Ruqayya 6Red9:20 pm, November 23, 2016

    A possibility could be 4+3=7+5=12+8=20

    ReplyDelete
  16. Ruqayya 6Red9:23 pm, November 23, 2016

    Another possibility is 8+2+4=14+6=20

    ReplyDelete
  17. Amisha 6blue10:05 pm, November 23, 2016

    Some of the possibilities could be
    4+6+8+2=20
    8+7+2+3=20
    4+5+8+3=20
    1+6+5+8=20

    ReplyDelete
  18. Adeline 6 red8:47 am, November 24, 2016

    2+4=6
    6+5=11
    11+8=19
    19+1=20

    ReplyDelete
  19. Ellie 4 Blue9:33 am, November 24, 2016

    6x4 so the numbers that you have to count in must be in fours.

    ReplyDelete
  20. Tofe and Jason 4 Red11:32 am, November 24, 2016

    Here are all 7 ways

    1.8+2+9+1

    2.7+3+4+6

    3.5+8+6+1

    4.7+5+4+1

    5.9+1+7+3

    6.8+7+4+1

    7.9+7+3+1

    Those are all the ways.

    ReplyDelete
  21. Marius11:36 am, November 24, 2016

    6+6+5+3=20

    ReplyDelete
  22. boston 4 red12:02 pm, November 24, 2016

    another way is 16+4=20 or 18+2=20 or 17+3=20 or 15+5=20 or 19+1=20 or just try number can to 20.

    ReplyDelete
  23. Matthew 4Red12:04 pm, November 24, 2016

    One way is 10,5,3,2
    Another way is 9,5,4,2
    Another way is 10,4,5,1
    For the challenge
    10,4,2
    7,5,4
    9,4,3

    ReplyDelete
  24. Maliea 4 red10:10 am, November 25, 2016

    These are all the combinations:

    1.8+5+4+3=20
    2.5+6+8+1=20
    3.4+8+2+6=20
    4.4+5+7+4=20
    5.8+7+4+1=20
    6.4+5+6+5=20


    Challenge:4+5+7=16

    ReplyDelete
  25. Jossie and shaquan 4 blue10:51 am, November 29, 2016

    19+1
    16+4
    10+10
    21-1

    ReplyDelete
  26. Liani4red2:14 pm, December 05, 2016

    One of the possibilities are 9,5,5,1 The second one 1,4,13,2. The other one is 10,4,5,1. The fourth one is 10,4,3,3 the fifth one is 6,9,3,2
    The sixth one is 4,8,4,4 And the last one is 9,7,3,1.

    ReplyDelete
  27. Amarnie 6red5:47 pm, December 05, 2016

    The fifth different ways can be:

    9+8=17+3=20

    9+9=18+2=20

    10+5=15+2=17+3=20

    9+6=15+1=16+4=20

    10+4=14+1=15+2=17+2=19+1=20

    ReplyDelete
  28. Amarnie 6red5:54 pm, December 05, 2016

    I've found many different ways but I just want to show you this one which is:

    6+6+6+2=20

    ReplyDelete
  29. Amarnie 6red5:57 pm, December 05, 2016

    I think that the challenge could be:

    8+8=16

    8+5=13+3=16

    9+3=12+4=16

    I think that there is many different ways to make 16 by using numbers from 1-8 but it I think that is all the calculations I can make to get the number 16.

    ReplyDelete
    Replies
    1. Isra 6 Red8:29 pm, January 28, 2017

      Armarnie,make sure you remember it's cards from 1-8

      Delete
  30. Amarnie 6red5:59 pm, December 05, 2016

    6x4=24-4=20

    ReplyDelete
  31. Isra 6 Red8:27 pm, January 28, 2017

    5+6=11+4=15+3=18+2=20

    ReplyDelete

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