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Standards/Math/Common Core/2.OA.C

2.OA.C

2.OA Operations and Algebraic Thinking
2.OA.A
2.OA.B
2.OA.C
2.OA.C.32.OA.C.4

Work with equal groups of objects to gain foundations for multiplication.

2.OA.C.3Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.2.OA.C.4Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.
Khan Academy Resources
Understand even and odd numbers visuallyAdding with arraysArray word problemsUnderstanding even and odd numbers visuallyAdding with arraysUsing arrays in word problems
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