Math

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Dalia made 8 party bags for her birthday party. Each bag contained 4 small gifts for her friends. When Denis said that she could come, Dalia had to make one more bag with 4 gifts. How many small gifts did Dalia need to fill her bags?

Walter wrote this number model: 8 x (4+4)=64

Explain what Walter's mistake.

  • Math -

    1 Bag = 4 Gifts
    Total # of party bags = 8
    Total # of part bags + Denis = 9

    So originally the # of gifts without Denis would have the following equation:

    8 x 4 = 32

    Now that Denis is coming we have 9 party bags:
    9 x 4 = 36

    OR

    (8 x 4) + 4 = 36

    So you see that the mistake is where Walter placed his brackets. Does this make sense?

  • Math -

    Oh I get it now, okay thank you very much!!

  • Math -

    No problem :)

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