John has 7 crayons. 7 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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Don has to clean 8 windows. He has cleaned 6 of them. How many are still left to be cleaned?
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Ray has 2 dollars more than Liz. Liz has 9 dollars. How many dollars does Ray have?
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Laura has to read 7 pages for her reading assignment. She read 7 pages. How many pages she has to still read?
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Harry picked 7 strawberries from the farm and ate 3 of them. How many strawberries does Harry now have?
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