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Rosario Math (rooms 404, 402) Feb 24 to Feb 28, 2020
Grade Level:
3
Subject:
Math
Topic:
Multiplication of Units 6 to 9
Multiplication and Division using Distributive Property
Objective:
SWBAT:
Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.
Determine the unknown whole number in a multiplication or division equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 × ? = 48, 5 = _ ÷ 3, 6 × 6 = ?
Apply properties of operations as strategies to multiply and divide. (Students need not use formal terms for these properties.) Examples: If 6 × 4 = 24 is known, then
4 × 6 = 24 is also known. (Commutative property of multiplication.) 3 × 5 × 2 can be foundby3×5=15,then15×2=30,orby5×2=10,then3×10=30. (Associative property of multiplication.) Knowing that 8 × 5 = 40 and 8 × 2 = 16, one can find 8 × 7 as 8 × (5 + 2) = (8 × 5) + (8 × 2) = 40 + 16 = 56. (Distributive property.)
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