This 21 problem matching activity helps students mentally add up different US coins and bills. It includes both sides of dollar coins (3 different types), half dollars, quarters, nickles, dimes, pennies, one dollar and five dollar bills. It is ideal for math center work and extra practice with mental math. Each problem is numbered and there is an included worksheet that could be used as a formative assessment on the skill. Can be used by small group, partners, or individual students. • Als