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Subtract & Multiply - Quiz 1

(13 Questions)
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Subtract & Multiply
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A new building needed 9 windows. The builder had already installed 6 of them. If it takes 6 hours to install each window, how long will it take him to install the rest?
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Each chocolate bar in a box cost $4. If a box had 8 bars total and Emily sold all but 3 bars, how much money would she have made?
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At lunch a waiter had 10 customers and 5 of them didn't leave a tip. If he got $3 each from the ones who did tip, how much money did he earn?
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At a restaurant each adult meal costs $7 and kids eat free. If a group of 13 people came in and 9 were kids, how much would it cost for the group to eat?
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Henry earned 5 dollars for each lawn he mowed. If he had 12 lawns to mow, but forgot to mow 7 of them, how much money did he actually earn?
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At the fair Adam bought 13 tickets. After riding the ferris wheel he had 4 tickets left. If each ticket cost 9 dollars, how much money did Adam spend riding the ferris wheel?
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A painter needed to paint 10 rooms in a building. Each room takes 8 hours to paint. If he already painted 8 rooms, how much longer will he take to paint the rest?
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A magician was selling magic card decks for 5 dollars each. If he started with 14 decks and by the end of the day he had 5 left, how much money did he earn?
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There were 16 friends playing a video game online when 7 players quit. If each player left had 8 lives, how many lives did they have total?
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A trivia team had 5 members total, but during a game 2 members didn't show up. If each member that did show up scored 6 points, how many points were scored total?
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A chef needs to cook 9 potatoes. He has already cooked 7. If each potato takes 3 minutes to cook, how long will it take him to cook the rest?
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In a video game, each enemy defeated gives you 5 points. If a level has 8 enemies total and you destroy all but 6 of them, how many points would you earn?
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A trivia team had 12 members total, but during a game 4 members didn't show up. If each member that did show up scored 8 points, how many points were scored total?
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