Mike has 5 crayons. 3 of them are in the green box and the others are in the red box. How many crayons are in the red box?
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My mom orders 8 pizza slices. We ate 3 slices. How many slices are left?
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Laura is allowed to talk only for 9 minutes to her friend. She has already talked for 4. How many more minutes Laura can talk?
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George has to clean 7 windows. He has cleaned 2 of them. How many are still left to be cleaned?
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7 birds are sitting on a tree. 1 of them flew away. How many birds will be left on the tree?
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