Joanna invited 8 friends to her birthday party. Only 7 friends came to the party. How many friends didn't came to Joanna's party.
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Liz has 9 teddy bears. She gave 9 of them to her best friend. How many teddy bears does she now have?
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My brother lost 2 pebbles out of the 8 pebbles he collected from the river. How many pebbles are left with my brother?
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Danny is 7 years old. Gail is 7 years old. Danny is how many years older than Gail?
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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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