Adding 3-Digit Numbers with Regrouping

Oh boy! Adding 3-digit numbers with regrouping is a doozy! ha ha. In Second Grade, this is the unit that makes most of us cringe. Actually, SUBTRACTING 3-digit numbers is worse, but that makes most of us want to quit. Teaching 7-year-olds how and why to regroup can be an absolute beast! LOL But, my […]