888 + 88 + 8 + 8 + 8 = 1,000. This is the kind of math riddle you can work out with times tables, or by simple logic. First, get as close to 1,000 as you can (888). From there, it’s easy to figure out ...

Students in Kristen Gonsoir’s classroom at Groton Area High School in Groton, S.D., spend a lot of time solving equations together. Early this school year, they passed almost an entire period working ...