A book costs $7.00. Mike has $5.00. How much more money does he need to buy the book?
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Laura invited 9 friends to her birthday party. Only 1 friends came to the party. How many friends didn't came to Laura's party.
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Ray has to clean 9 windows. He has cleaned 6 of them. How many are still left to be cleaned?
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I have 5 dollars with me. I bought a toy car for 4 dollars. How many dollars I have left?
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My brother lost 2 pebbles out of the 9 pebbles he collected from the river. How many pebbles are left with my brother?
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