Model Commutative Property using Arrays
Videos to help Grade 3 students learn how to relate arrays to tape diagrams to model the commutative property of multiplication.
Common Core Standards: 3.OA.5, 3.OA.7, 3.OA.1, 3.OA.2, 3.OA.3, 3.OA.4, 3.OA.6
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Common Core For Grade 3
New York State Common Core Math Module 1, Grade 3, Lesson 15
Lesson 15 Concept Development
Pictorial: Relate arrays with tape diagrams.
2 × 4 = 4 × 2
Pictorial - Abstract: Model commutativity using arrays and tape diagrams.
1. Label the tape diagrams and complete the equations. Then draw an array to represent the problems.
b) 4 × _____ = _____
_____ × 4 = _____
2. 7 clowns hold 4 balloons each at the fair. Draw and label a tape diagram to show the total number of
balloons the clowns hold.
3. George swims 7 laps in the pool each day. How many laps does George swim after 4 days? Draw and label
a tape diagram to solve.
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