Topic C: Multiplication of up to four digits by single-digit numbers
Topic C includes lessons 7-11. "Use place value disks to represent two-digit by one-digit multiplication. Extend the use of place value disks to represent three- and four-digit by one-digit multiplication. Multiply three- and four-digit numbers by one-digit numbers applying the standard algorithm. Connect the area model and the partial products method to the standard algorithm." Eureka Math/Engage
