1. Comprehension & Application
SMP.6: Attend to precision.
The student made one error in noting the number of objects in each group in 1b. Because the student is able to answer the rest of the questions on the page correctly, it does not seem like the student does not show proficiency on the path to 2.OA.C.4. Instead, it is likely that the student was not attending to precision to ensure that the verbal expression exactly matched the visual model and repeated addition equation.
2.OA.C.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.