Quinton brought 40 cupcakes to school on his birthday. He gave a cupcake to each of the 18 students in Ms. Delmont's class. He also gave a cupcake to each of the 16 students in Mrs. Donnelly's class. He also gave a cupcake to Ms. Delmont, Mrs. Donnelly, the school nurse, and the school principal. How many cupcakes did he have left over? Let's be accurate as possible.
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Quinton had 40 cupcakes - 18 = 22 cupcakes. He then had 22 cupcakes - 16 students = 6 cupcakes. Quinton then gave away 6 - 1 - 1 - 1 - 1 = 2 cupcakes left.
The answer: 2.
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