Practice mixed operations with this review of a ddition, subtraction, multiplication, and division operations. Twelve math riddle worksheets provide practice with calculation skills and are a fun, engaging way to practice adding, subtracting, multiplying and dividing multi-digit numbers. Includes a quick check/mixed practice quiz to determine next steps for whole-class and small-group instruction. What's included?12 Riddle Worksheets: One 5-digit Addition One 5-digit Subtraction Two 2 by 2