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Lily's Marbles

Lily is on a winning streak! Help her determine how many marbles she will add to her collection.

Lily is a serious contender at marbles. She keeps winning and adds new marbles to her collection every week.

Find out how many marbles Lily will add to her collection on the seventh week. Will you need addition, multiplication, or a logical sequence? The choice is yours, but you’ll actually need a little bit of everything!

  • This puzzle can be used as an introduction to multiplication. The operations aren’t too complicated for younger students, but understanding the problem might be more difficult.

  • Planning notes