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Four Fact Families. Multiplication and Division. DEFINITIONS. Multiplicand - Any number being multiplied. 2 x 5 = 10 Inverse Operation - An opposite operation that undoes another operation. 2 x 5 = 10 10 ÷ 5 = 2. Multiplication/Division Four Fact Families.
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Four Fact Families Multiplication and Division
DEFINITIONS • Multiplicand - Any number being multiplied. • 2x5 = 10 • Inverse Operation - An opposite operation that undoes another operation. • 2 x 5 = 10 10 ÷ 5 = 2
Multiplication/Division Four Fact Families • Start with a simple multiplication fact. 3 x 5 = 15 • Change the order of the multiplicands. Why are we permitted to do this? 5 x 3 = 15 • Write the Inverse operations for multiplication facts. • 15 ÷ 3 = 5 • 15 ÷ 5 = 3
What are the members of the Four Fact family for • 4 x 9 = 36 • 2x 8 = 16 • 5x 7 = 35 • What important idea must elementary school children understand about the relationship between multiplication and division?