This is a simple pdf file of a 1 page worksheet to practice Common Core Standard 2.OA.4.
Use 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.
The entire page is shown in the thumbnail picture. It is provided as a grayscale version to copy for students, a color version for teacher to project, and a color copy of answers.
NOTE: There is a duplicate equation. 5 + 5 = 10 is used twice!!
I was too deep into grouping & alignment to change it!!