Question
Gwen wanted to invite 502 guests to her wedding. Each of her 6 friends helped her to make 21 invitation cards. She made the rest of the cards herself.
  1. How many invitation cards did Gwen's friends help her make?
  2. Assuming that Gwen needed a card for each guest, how many more cards did Gwen have to make by herself?
3 m
(a)

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(b)

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Gwen wanted to invite 502 guests to her wedding. Each of her 6 friends helped her to make 21 invitation cards. She made the rest of the cards herself.
  1. How many invitation cards did Gwen's friends help her make?
  2. Assuming that Gwen needed a card for each guest, how many more cards did Gwen have to make by herself?