Say « I’m thinking of a number » at dinner and a seven-year-old will start guessing wildly: 5, 100, a million. This 2nd grade two-digit number riddles worksheet turns that game into careful thinking. Each of the seven riddles gives a few clues. One says a 6 sits in the tens place, another asks for a number between 20 and 30. Your child lists the numbers that could work, then crosses out the ones that break a clue. Most answers sit between 20 and 99, and one riddle hides a three-digit number. A second page gives the answer key.