Question: A 220-liter barrel has a small leak. It lost 10% of its contents before anyone noticed. How many liters are left in the barrel?
Answer: Step-by-step reasoning process: The barrel lost 220 * 10 / 100 = 22 liters before anyone noticed. So, 220 – 22 = 198 liters are left in the barrel.
So the answer is 198.

Question: For 5 days, Chantel makes 2 friendship bracelets every day. She gives away 3 bracelets to her friends at school. Then for four days, she makes 3 friendship bracelets every day. Then she gives away 6 bracelets to her friends at soccer practice. How many bracelets does Chantel have in the end?
Answer: Step-by-step reasoning process: After five days, Chantel has 5 * 2 = 10 bracelets. Then she has 10 - 3 = 7 bracelets. After the next four days, she makes 4 * 3 = 12 bracelets. In the end, Chantel has 7 + 12 - 6 = 13 bracelets.
So the answer is 13.

Question: Mary uses plastic grocery bags that can hold a maximum of twenty pounds. She buys 4 pounds of green beans, 6 pounds milk, and twice the amount of carrots as green beans. How many more pounds of groceries can Mary fit in that bag?
Answer: Step-by-step reasoning process: First find the total weight of the carrots: 4 pounds * 2 = 8 pounds. Now add the total weight of each item: 6 pounds + 8 pounds + 4 pounds = 18 pounds. Now subtract the total weight of the groceries from the bag's weight limit: 20 pounds - 18 pounds = 2 pounds.
So the answer is 2.

Question: Milly and Floretta are having a water balloon fight in their garden. They use 3 packs of their own water balloons and also use 2 packs of a neighbor’s water balloons. Each pack of water balloons contains 6 balloons. Milly and Floretta fill all of the balloons then split them evenly, but Milly takes an extra 7 balloons when Floretta isn't looking. How many water balloons is Floretta left with?
Answer:
Step-by-step reasoning process: Milly and Floretta have a total of 3 packs of their own water balloons + 2 packs of the neighbor’s water balloons = 5 packs of water balloons. So there is a total of 5 packs of water balloons * 6 balloons per pack of water balloons = 30 water balloons available. As they split them evenly, they each have 30 water balloons / 2 = 15 water balloons. After Milly steals some balloons, Floretta is left with 15 – 7 = 8 water balloons.
So the answer is 8.