Proded Math. III-A: Multiplying whole numbers with regrouping Proded Math. III-C: Multiplying whole numbers with regrouping Proded Math. III-B: Multiplying whole numbers with regrouping Proded Math. III-C: Multiplying whole numbers without regrouping Proded Math. III-A: Multiplying whole numbers without regrouping Proded Math. III-B: Multiplying whole numbers without regrouping Multiply 2-3 Digit Numbers By 1-2 Digit Numbers With Regrouping Lesson Guide in Elementary Mathematics Grade 3. Chapter II, Rational Numbers, Fractions Multiplying 2- to Numbers by 2-Digit Numbers without Regrouping