Answer this question:David found $12 on the street. He then gave it to his friend Evan who has $1 and needed to buy a watch worth $20. How much does Evan still need?
The total amount Evan has is $1 + $12 = $13. So Evan still needs $20 - $13 = $7.
The answer is 7.

Answer this question:Brendan has entered a kickboxing competition and wins matches against multiple contestants. He wins all of the matches in the first 2 rounds, each of which had 6 matches, then wins half of the 4 matches in the last round. How many matches did Brendan win throughout the competition?
In the first 2 rounds, Brendan wins a total of 2 rounds * 6 matches per round = 12 matches. In the last round, Brendan wins half of the matches which is 4 matches / 2 = 2 matches. Throughout the competition, Brendan has therefore won 12 + 2 = 14 matches.
The answer is 14.

Answer this question:Jeremy buys 3 bags of chips for a party. Stacy and Emily also buy chips for the party. If they need 10 bags of chips total, and Stacy buys 4 bags, how many bags of chips should Emily buy?
Jeremy and Stacy buy 3 + 4 = 7 bags of chips. Since there needs to be 10 total, Emily should buy 10 - 7 = 3 bags of chips.
The answer is 3.

Answer this question:Seth bought some boxes of oranges. He gave a box to his mother. He then gave away half of the remaining boxes. If Seth has 4 boxes of oranges left, how many boxes did he buy in the first place?
After giving a box to his mom, Seth had 4 * 2 = 8 boxes left. Seth bought 8 + 1 = 9 boxes of oranges.
The answer is 9.