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Ver.1 Multiplication Strategy: Partial Products Materials: Multiplication Equations Board (1 x 2 digit or 1 x 3 digit) ______________________________________________________________________________________________________________________________________ 1. Choose a line of four problems from the board (vertically, horizontally or diagonally). 2. Solve each problem by breaking the factors into parts that are easier to multiply. Solve the easier problems and then add the partial products. Example: 4 x 39 = (4 x 30) + (4 x 9) 120 + 36 = 156 or x 30 4 120 9 36 120 + 36 = 156 x Example: 3 x 425 = (3 x 400) + (3 x 20) + (3 x 5) or 3 1,200 + 60 + 15 = 1,275 400 20 5 1200 60 15 1200 + 60 = 15 = 1,275 ©K-5MathTeachingResources.com 4 x 28 = 5 x 64 = 6 x 27 = 7 x 82 = 8 x 23 = 9 x 34 = 3 x 42 = 6 x 36 = 5 x 15 = 4 x 18 = 4 x 22 = 4 x 31 = 7 x 33 = 82 x 4 = 44 x 3 = 32 x 6 = ©K-5MathTeachingResources.com 4 x 212 = 5 x 126 = 6 x 232 = 7 x 148 = 8 x 213 = 9 x 324 = 3 x 344 = 6 x 236 = 9 x 137 = 5 x 215 = 4 x 262 = 7 x 131 = 7 x 124 = 8 x 225 = 4 x 145 = 2 x 623 = ©K-5MathTeachingResources.com