Operations and Algebraic Thinking
Represent and solve problems involving multiplication and division
3.OA.A.1Interpret products of whole numbers, e.g. interpret 5 x 7 as the total number of objects in 5
groups of 7 objects each. For example, describe a context in which a total number of objects can be
expressed as 5 x 7.
Equal Groups
RelateAddition and Multiplication
BuildingArrayPicture Cards Arrays8
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10
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3.OA.A.2Interpret whole-number quotients of whole numbers, e.g. interpret 56÷8 as the number of
objects in each share when 56 objects are partitioned equally into 8 shares, or as a number of shares when 56 objects are partitioned into equal shares of 8 objects each. For example, describe a context in
which a number of shares or a number of groups can be expressed as 56 ÷8.
Identify the Unknown 17
3.OA.A.3groups, arrays, and measurement quantities, e.g. by using drawings and equations with a symbol for Use multiplication and division within 100 to solve word problems in situations involving equal
the unknown number to represent the problem.
Word Problems: Arrays (Set 1) 20
Word Problems: Arrays (Set 2) 25
Word Problems: Equal Groups 30Word Problems: Number of Equal Groups Word Problems: Size of Equal Groups (^3540)
Equal Rows in a Marching Band 45
Sharing Marbles 46
Math Read Aloud Task Cards:
One Hundred Hungry Ants Six Dinner Sid (^4748)
Amanda Bean’s Amazing Dream 49
TheDoorbell Rang 50
3.OA.A.4Determine 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 x?=48, 5 = ?÷3, 6x6 =?
Missing Numbers: Multiplication Missing Numbers:Division 6151
Understand properties of multiplication and the relationship between multiplication and
division
3.OA.B.5known then 4x6=24 is also known (Commutative property of multiplication.) 3x5x2 can be found by Apply properties of operations as strategies to multiply and divide. Examples: If 6x4=24 is
3x5=15, then 15x2=30, or by 5x2=10, then 3x10=30 (Associative property of multiplication). Knowing that
8x5=40 and 8x2=16, one can find 8x7 as 8 x (5+2) = (8x5) + (8x2) = 40 +16 =56 (Distributive property).
Turn Your Array 68
Decompose a Factor (ver. 1) 69
Decompose a Factor (ver. 2) 70
3.OA.B.6Understand division as an unknown-factor problem. For example, find 32 ÷8 by finding the
number that makes 32 whenmultiplied by 8.
Division as an Unknown Factor Instructions Division as an Unknown Factor (x1 & x2) (^7173)
Division as an Unknown Factor (x5 & x10) 75
Division as an Unknown Factor(x3 & x6) 77
Division as an Unknown Factor(x4 & x8) 79
Division as an Unknown Factor(x7 & x9) 81
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