Multiplication Problem Cards with 4 problems on each card.Problems range from static (no regrouping) to dynamic (regrouping).4-digit multiplicands for each problem1- to 3-digit multipliers for each problemAnswer Key cards and record keeping sheets (individual student and teacher whole group)Montessori color-coded place valuesUse with Montessori math materials (or other support materials) or no materials.1st through 5th grade