Lorri invited 7 friends to her birthday party. Only 6 friends came to the party. How many friends didn't came to Lorri's party.
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Bill is 6 years old. Jean is 4 years old. Bill is how many years older than Jean?
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I have 8 dollars with me. I bought a toy car for 6 dollars. How many dollars I have left?
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I filled a tank with 7 gallons of water. 3 gallons leaked from the tank. How many gallons of water is left in the tank?
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There are 9 cookies in a plate. 8 kids took one cookie each from the plate. How many cookies are left in the plate?
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