About This Worksheet
Want to help your child practice U.S. history and math at the same time? This worksheet is a math riddle and a history pop quiz all rolled up into one. If your fourth grader solves the riddle, he'll find out how many U.S. presidents were under 40 when they took office. Discovering the answer will require logic, arithmetic, and social studies skills.
Topics
Worksheet reprinted with permission from The World Almanac for Kids Puzzler Deck: U.S. History and Geography, Ages 9-11 (Chronicle Books, 2008).
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