The Toothpaste Millionaire
Jean Merrill
Hardcover
(Houghton Mifflin, Sept. 4, 2006)
Likable, clever, and inventive sixth-graders Rufus Mayflower andKate Mackinstrey develop and sell toothpaste to become millionairesin just one year! This fun, breezy story includes many real-life mathematicalproblems which the characters must solve to succeed intheir budding business.
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