A fish tank has 21 fishes. 8 of them have red fins and others have blue fins. How many fishes have blue fins?
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James has to clean 48 windows. He has cleaned 43 of them. How many are still left to be cleaned?
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There are 54 cookies in a plate. 32 kids took one cookie each from the plate. How many cookies are left in the plate?
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Karen has 52 teddy bears. She gave 47 of them to her best friend. How many teddy bears does she now have?
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Tim is 80 years old. Gail is 19 years old. Tim is how many years older than Gail?
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