Assign the digits 0 through 9 to the letters below to create valid sums. Each letter stands for a unique digit, and all occurrences of that letter stand for the same digit. (For instance, if A = 6, ...

High school seniors had the worst reading scores since 1992 on a national test, a loss probably related to increases in screen time and the pandemic. Their math scores fell as well. By Dana Goldstein ...