Question: A bakery sells boxes of doughnuts and if there are any doughnuts left at the end of the day, the bakery gives them away. Each box of doughnuts holds 10 doughnuts and all of the doughnuts that the bakery makes are put into these boxes. The bakery makes 300 doughnuts for the day and sells 27 boxes of doughnuts throughout the day. How many doughnuts are given away at the end of the day?
Answer with step-by-step thinking: The bakery has made 300 total doughnuts / 10 doughnuts per box = 30 boxes of doughnuts. So at the end of the day, they still have 30 total boxes of doughnuts – 27 sold boxes of doughnuts = 3 boxes of doughnuts leftover. They are therefore giving away 3 boxes of doughnuts * 10 doughnuts per box = 30 doughnuts.
So the answer is 30.


Question: Rosalina receives gifts from three people on her wedding day. How many gifts did she get if Emilio gave 11 gifts, Jorge gave 6 gifts, and Pedro gave 4 gifts?
Answer with step-by-step thinking: If Emilio presents 11 gifts and Jorge 6 gifts, together they have presented 11 + 6 = 17 gifts. If Pedro also gives Rosalinda 4 gifts, Rosalinda's total number is 17 + 4 = 21 gifts.
So the answer is 21.


Question: Louise is hanging 30 of her pictures on the wall. She hangs some of them vertically, half of them horizontally, then hangs the remaining 5 pictures haphazardly. How many pictures did Louise hang vertically?
Answer with step-by-step thinking:
There are 30 / 2 = 15 pictures hanging horizontally. So there is a total of 15 + 5 = 20 pictures hanging either horizontally or haphazardly. Therefore, there are 30 – 20 = 10 pictures hanging vertically.
So the answer is 10.