3.24.2011

"I'm thinking of a number..."

Ok you guys, let's see if you can do it. The challenge is this (use comments for this exercise):
  1. We are going to start with seven times three from the class list. That person has to make one "I'm thinking of a number" card.
  2. In decreasing order, the next one will solve the number.
  3. The one who wrote the card will say if it's correct or not. If not, he/she will say the answer.
    4. I'm thinking of a number
  4. The one who tried to find the number will write another "I'm thinking of a number" card and so on.
I will arbitrate the whole thing, so get focused on the blog and on my comments. Click on the image to find the examples we made the other day.

We can start now until next friday (april 1st).
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25 comments:

  1. Rafa Cabezuelo27/03/2011, 18:09

    Nazareth misses her turn. Juanma, you have to write your "I'm thinking of a number" card.

    ReplyDelete
  2. Naza(:27/03/2011, 21:24

    9x+1=6x-5

    ReplyDelete
  3. Rafa Cabezuelo27/03/2011, 23:33

    Juanma, you have to write your "I'm thinking of a number" card. Look the examples by clicking on the image. You don't have to write an equation, but a card.

    ReplyDelete
  4. Tony Rodriguez =)28/03/2011, 16:08

    I´m thinking of a number...

    If you multiplied my number by 3 and add 4 , the equal is 19.

    Bye! :)

    ReplyDelete
  5. Rafa Cabezuelo28/03/2011, 21:27

    RULE CHANGE: Anyone can answer. When someone get the correct answer the next one in the list will write another "card"

    ReplyDelete
  6. Rafa Díaz28/03/2011, 21:49

    3X+4=19
    3·5+4=19

    ANS: The number is five

    ReplyDelete
  7. Rafa Cabezuelo29/03/2011, 18:51

    Good Job! Who is the next in the list? Come one Coke, it is your time!!

    ReplyDelete
  8. Coke ;D HAPPY30/03/2011, 17:08

    "I'm thinking of a number. If you multiply my number by 6 and then subtract 215, you will get my number.
    Bye

    ReplyDelete
  9. Tony Rodriguez =)30/03/2011, 19:03

    Coke , you will say the equal of the operation because if you don´t say this , we can´t resolve the equation =)

    Bye!

    ReplyDelete
  10. Rafa Cabezuelo30/03/2011, 20:47

    Antonio, you have to write the equation first, and then solve it. It's different from the one you made, but it can be solved. Go ahead guys!!

    ReplyDelete
  11. Javi Leiva30/03/2011, 21:46

    The answer for the Coke's equation is "-215/6", because you can't simplify these equation!

    ReplyDelete
  12. Rafa Cabezuelo30/03/2011, 21:59

    Can you write the equation, Javi?

    ReplyDelete
  13. Javi Leiva30/03/2011, 22:40

    Ok!
    6x-215=x
    I made the change of number 6x to negative!
    Is my answer good? =)
    Good night!

    ReplyDelete
  14. Javi Leiva31/03/2011, 15:39

    The answer is 43...

    ReplyDelete
  15. Anonymous31/03/2011, 16:29

    Hello class again!
    I´m thinking of a number...
    If you multiply my number by 10 and then add 7 you will get 67.
    What is my number?

    Bye class! :)

    It's very easy!

    ReplyDelete
  16. Tíscar Espino31/03/2011, 16:53

    10x+7=67
    10x=67-7
    10x=60
    x=60/10
    x=6
    This is the solution
    BYE=)

    ReplyDelete
  17. Anonymous31/03/2011, 17:52

    It's correct!
    Very good Juan Antonio!
    Bye class again :)!

    ReplyDelete
  18. Rafa Cabezuelo31/03/2011, 21:40

    Great job!! Keep on trying! Who's next?

    ReplyDelete
  19. alvarooo :-P01/04/2011, 20:01

    This comment has been removed by the author.

    ReplyDelete
  20. alvarooo :-P01/04/2011, 20:03

    Hello!
    I thinking of a number...
    If you multiply my number by 7 and then add 3 you will get 38.

    ReplyDelete
  21. Inma02/04/2011, 10:24

    Hi!
    x multiply by 7 + 3 is 38
    x is 38/7 - 3
    x is, aproximately because you can't divide 38/7, 5,43
    x is, aproximately 2,43
    (Really 38/7 is 5,428...)
    By!

    ReplyDelete
  22. Blanca:)02/04/2011, 12:03

    I think that the answer of inma isn´t correct.

    I think that the answer is:

    38-3=35

    35/7= 5

    So, the x is equal to five.

    5·7+3 =38

    ReplyDelete
  23. Rafa Cabezuelo02/04/2011, 13:52

    Blanca is right! Who's next?

    ReplyDelete
  24. Anonymous02/04/2011, 18:32

    I think that the next is Miguel!

    ReplyDelete
  25. Rafa Cabezuelo05/04/2011, 16:18

    The activity is finished. Well done guys!!

    ReplyDelete

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