Tuesday 3 February 2015

Balanced equations

On Monday we looked at balanced equations using the number scales.  Like this one:
 10 + 8 + 6 + 4 + 2  = 30 =  (5 x 2) + (4 x 2) + (3 x 2) + (2 x 2) + (1 x 2)

Can you say what the equation would be for any of these balances?
A.
B.
C.
You could post your equations in the comments below.
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17 comments:

  1. Anonymous3 February 2015 at 08:09

    A. 10 + 10 + 2 + 2 + 4 + 4 = 32
    B. 10 + 6 +2 = 18
    C. 2 + 2 + 2 + 4 = 10

    ReplyDelete
    Replies
    1. Mr Gregg3 February 2015 at 10:04

      Sebastian, thank you so much for being the first to reply.
      However, these are not quite correct. Have a look at Aditi's and Marie's below.

      Delete
  2. Anonymous3 February 2015 at 08:21

    A..(10x2)=20=(2x4)+(4x3)

    B..10+2=12=(6x2)

    C..(4x1)=4=(2x2)

    ReplyDelete
  3. Anonymous3 February 2015 at 09:46

    A. ( 2x10)=(2x2)+(4x4)
    B.10+2=(6x2)
    C.4=(2x2)

    ReplyDelete
    Replies
    1. Mr Gregg3 February 2015 at 10:02

      And that would work too, yes!
      (Notice how you've got a different answer to Aditi for A - but both could work!)

      Delete
  4. Anonymous3 February 2015 at 12:52

    A. 10 x 3 = 30 = (2 x 5) + (4 x 5)
    B. (10 x 3) + ( 2 x 3) = 36 = 6 x 6
    C. 4 x 3 = 12 = 2 x 6

    ReplyDelete
  5. Anonymous4 February 2015 at 03:53

    A. 10 x 2 = 20 = (2 x 4) + (4 x 3)
    B. (10 x 4) + (2 x 4) = 48 = 6 x 8
    C. 5 x 4 = 20 = 2 x 10

    ReplyDelete
  6. Anonymous4 February 2015 at 10:10

    A.10x2=20=( 2x2 ) + ( 4x4 )
    B. ( 10x1 ) + ( 2x1 )=12=( 6x2 )
    C.( 4x1 ) =4=( 2x2 )

    ReplyDelete
  7. Anonymous4 February 2015 at 10:19

    a.(10*2)=(2*2)+(4*4)
    b. (10+2)= (6*2)
    c. 4=(2*2)

    ReplyDelete
  8. Mr Gregg4 February 2015 at 23:26

    Isn't it interesting how there are different ways to write this equation! Well done everyone!

    ReplyDelete
  9. Anonymous5 February 2015 at 09:06

    This comment has been removed by the author.

    ReplyDelete
    Replies
    1. Anonymous5 February 2015 at 12:26

      here below my own examples...
      (2x4)+(3x2)=(2x5)+(2x2)
      (3x3)+(1x2)=(2x2)+(2x2)
      (7x2)+(2x2)=(2x5)+(2x4)

      Delete
  10. Anonymous15 February 2015 at 07:56

    A. (10x2) = (2x4) + (4x3)
    20 = 20

    B. (10x1) + (2x1) = 6x2
    12 = 12

    C. 4x1 = 2x2
    4 = 4

    ReplyDelete

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