Liam had some marbles. He found 26 more and now he has 74. - Δ + 26 = 74, Sophie had some flowers. She gave away 15 and now she has 20. - Δ − 15 = 20, Matthew had some cookies. His mom gave him 12 more, and now he has 30. - Δ + 12 = 30, Camila had some stickers. She used 9 and now she has 41 - Δ − 9 = 41, Thomas had some coins. He found 18 more and now he has 50. - Δ + 18 = 50,

math

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