Question: James buys 100 tennis balls and gives half of them away. The other half he puts into 5 large containers. How many tennis balls go in each container?
Answer with step-by-step thinking: He keeps 100 / 2 = 50 tennis balls. So 50 / 5 = 10 go in each container.
So the answer is 10.

Question: Stanley sold 4 cups of lemonade an hour. His brother, Carl, sold 7 cups of lemonade an hour. How many more cups did Carl sell than Stanley in 3 hours?
Answer with step-by-step thinking: Stanley sold 4 x 3 = 12 cups. Carl sold 7 x 3 = 21 cups. Carl sold 21 - 12 = 9 cups more than Stanley.
So the answer is 9.

Question: Jeremy buys 30 watermelons. He eats 3 watermelons per week. Each week he gives 2 to his dad. How many weeks will the watermelons last?
Answer with step-by-step thinking:
Jeremey goes through 3 + 2 = 5 watermelons per week. Therefore, the watermelons will last him to 30 / 5 = 6 weeks.
So the answer is 6.