I filled a tank with 7 gallons of water. 2 gallons leaked from the tank. How many gallons of water is left in the tank?
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A book costs $6.00. Thomas has $2.00. How much more money does he need to buy the book?
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Bill has to clean 8 windows. He has cleaned 4 of them. How many are still left to be cleaned?
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Danny has 3 quarters less than Jean. Jean has 7 quarters. How many quarters does Danny have?
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A fish tank has 9 fishes. 5 of them have red fins and others have blue fins. How many fishes have blue fins?
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