Second graders use rectangular arrays to work with repeated addition, a building for multiplication in third 2.OA.4 Use addition to find the total grade. A rectangular array is any arrangement of things in rows and columns, such as a rectangle of square tiles. number of objects arranged in Students explore this concept with concrete objects (e.g., counters, bears, square tiles, etc.) as well as pictorial rectangular arrays with up to 5 rows and representations on grid paper or other drawings. Due to the commutative property of multiplication, students can up to 5 columns; write an equation to add either the rows or the columns and still arrive at the same solution. express the total as a sum of equal addends Example: What is the total number of circles below?
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 Second graders use rectangular arrays to work with repeated addition, a building for multiplication in third grade. A rectangular array is any arrangement of things in rows and columns, such as a rectangle of square tiles. Students explore this concept with concrete objects (e.g., counters, bears, square tiles, etc.) as well as pictorial representations on grid paper or other drawings. Due to the commutative property of multiplication, students can add either the rows or the columns and still arrive at the same solution. Example: What is the total number of circles below?