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Thaddeus goes to the home improvement store to buy some hardware. A drill costs $43.50, a cordless screwdriver costs $36.80, screws cost $5, and screw anchors cost $4.30. Before his purchases he had $110 in his wallet. How much is he left with?

Fact Lab

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Interesting fact:

There is a drawback to your summer vacation: studies have shown a decline in student IQ scores following their holidays. We recommend you take along some crossword puzzles on your next break.