Question

which repeated addition sentence matches the array? array of 3 rows and 5 columns of pink squares options: 5 + 3 + 3 + 4 = 15; 3 + 4 + 4 + 4 = 15; 3 + 3 + 3 + 3 + 3 = 15

Explanation:

Step1: Count rows and columns

The array has 3 rows, with 5 squares per row.

Step2: Write repeated addition

Add the number of squares in each row: $5 + 5 + 5 = 15$, or add the number of squares in each column: $3 + 3 + 3 + 3 + 3 = 15$.

Step3: Match to options

The column-based repeated addition matches the third option.

Answer:

3 + 3 + 3 + 3 + 3 = 15