Maddy's 4th grade class needs to make 1000 Valentine's Day cards to get a pizza party. There are 30 kids in the class. If everyone makes 8, how many more cards will they need to make to get a pizza party?
Let's think: If 30 kids each make 8 cards, they will have made 240 cards because 30 * 8 = 240. Since 1000 - 240 = 760, they need to make 760 more cards.. The answer is: 760.

Jack bought 3 books a month at $20 each. He sells them back at the end of the year for $500. How much money did he lose?
Let's think: He bought 3 * 20 = $60 of books a month. That means he bought 60 * 12 = $720 of books a year. So he lost 720 - 500 = $220.. The answer is: 220.

At a gym, the blue weights are 2 pounds each, and the green weights are 3 pounds each. Harry put 4 blue weights and 5 green weights onto a metal bar. The bar itself weighs 2 pounds. What is the total amount of weight, in pounds, of Harry's custom creation?
Let's think: The blue weights weigh 4 * 2 = 8 pounds. The green weights weigh 5 * 3 = 15 pounds. The weights weigh 8 + 15 = 23 pounds. The total is then 23 + 2 = 25.. The answer is: 25.

There were 140 kids in the junior prom. Of those, a fourth of them were dancers. Of the dancers, 25 danced the slow dance. How many of the dancer students did not slow dance?
Let's think:
140 / 4 = 35 of the students were dancers. 35 - 25 = 10 of the dancer students did not slow dance.. The answer is: 10.