/curriculum/im/05-grade/unit-4-wrapping-up-multiplication-and-division-with-multi-digit-numbers/section-c-lets-put-it-to-work/lesson-20/ to /curriculum/im/05-grade/unit-4-wrapping-up-multiplication-and-division-with-multi-digit-numbers/section-c-lets-put-it-to-work/lesson-20/activities