FOUR MULTIPLICATION STRATEGIES.

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© 2007 M. Tallman 125× = © 2007 M. Tallman (5 × 4) 85×= 40 45×= 20 5 × 12 = (5 × 8) + 125×= 60.

Objective: To use the Distributive Property of multiplication.

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Presentation transcript:

FOUR MULTIPLICATION STRATEGIES

#1 Break a Factor into Two or More Addends (Distributive Property): 16 x 4 = 4 x (10 + 6) 4 x 10 = 40 + 4 x 6 = 24 40 + 24 = 64

#1 Break a Factor into Two or More Addends (Distributive Property): 17 x 5 =

#1 Break a Factor into Two or More Addends (Distributive Property): 9 x 6 =

#2 Factor a Factor 16 x 4 = 16 x 4 = 8 x 2 x 4 2 x 4 = 8 8 x 8 = 64

#2 Factor a Factor 12 x 16 12 x 16 = 12 x (4 x 2 x 2) 12 x 4 = 48 48 x 2 = 96 96 x 2 = 192

#2 Factor a Factor 51 x 14

#3 Round a Factor and Adjust 12 x 16 12 x 20 = 240 12 x 4 = 48 240 – 48 = 192

#3 Round a Factor and Adjust 31 x 7

#4 Halving and Doubling 12 x 6 12 x 6 = 24 x 8 = 48 x 4 96 x 2 192

#4 Halving and Doubling 26 x 28