Build number sense and review skills with this set of 100 riddle cards for the numbers 1 to 100. Great for spiraled review of math concepts and vocabulary! Small group, whole group, or independent practice with odd/even, tens and ones, coins (pennies, nickels, dimes), and comparison signs for equalities and inequalities. $ https://www.teacherspayteachers.com/Product/First-Grade-and-Second-Grade-Math100-Riddle-Cards-for-the-Hundred-Chart-191803