Second Grade · Math · week 32

Repeated addition from arrays

Write a repeated addition equation for an array and connect it to the total.

Every array can be written as a repeated addition equation. If an array has 4 rows of 6, that means 6 is added 4 times: 6 + 6 + 6 + 6.

Writing the equation is a shortcut for describing the whole array in one line. It also gets you ready for multiplication, which you will meet in third grade.

📋 For the teacher
Teach it (10–15 min):
  • Have them build the array first, then write the matching repeated addition equation right underneath it -- concrete before symbolic.
  • Practice reading an equation backward into an array description, not just forward from array to equation.
  • Keep row counts small (up to 5 or 6 rows) so the addition itself stays manageable while the concept is new.
  • Mention gently that this repeated addition is exactly what multiplication will shortcut next year -- no need to introduce it yet, just plant the seed.
Talk about it:
  • How do you turn an array into a repeated addition equation?
  • If you see the equation 7 + 7 + 7, how many rows and how many columns would that array have?
  • Why is repeated addition a good way to describe an array?

Mastery looks like: They write and solve a repeated addition equation that correctly matches a given array.

Common stumbles: Writing the wrong number of addends (miscounting rows); adding the numbers correctly but describing rows and columns backward.

See it visually

Interactive, spoken-aloud tools that show this idea in motion.

MultiplicationEqual groups and arrays make products finally click.try →AdditionSee groups combine — with counters, blocks, and the number line.try →
Homework for this lessonType it, write it with a stylus, or print it for pencil & paper.open →
Records attendance + 15 min of Math for this learner.
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