1. Understanding repeated addition as an array
Rows and Columns
Understanding repeated addition as an array

2. Rows-Number of things in a straight line that goes horizontally
rows in a movie theater
carton of eggs
row of houses
rows of flowers

3. Think of your own real life rows

4. Columns- a vertical arrangement of figures or other information.
columns on the White House
columns under a bridge

5. Think of your own real life columns

6. Here are 6 counters How many rows are there? 3
How many columns are there? 2

7. 3 rows and 2 columns.
2+2+2 = 6
Could we write a repeated addition sentence?

8. Here are 6 counters How many rows are there? 2
How many columns are there? 3

9. 2 rows and 3 columns.
3 + 3 = 6
Could we write an addition sentence?

10. What do you notice?
3 + 3 = 6
= 6

11. Here are 10 counters How many rows are there? 5
How many columns are there? 2

12. 5 rows and 2 columns
= 10
Could we write an addition sentence?

13. Here are 10 counters How many rows are there? 2
How many columns are there? 5

14. 2 rows and 5 columns.
5 + 5 = 10
Could we write an addition sentence?

15. What do you notice?
5 + 5 = 10
= 10

16. Here are 12 counters How many rows are there? 6
How many columns are there? 2

17. Could we write an addition sentence?
6 rows and 2 columns
Could we write an addition sentence?
= 12

18. Here are 12 counters How many rows are there? 2
How many columns are there? 6

19. 2 rows and 6 columns.
6 + 6 = 12
Could we write an addition sentence?

20. What do you notice?
6 + 6 = 12
= 12

21. Mrs Masterson bakes cakes. She bakes her four children two cakes each.
How many cakes does she bake?

22. = 8
4 + 4 = 8

23. Mrs Patel buys some sweets. She buys her five friends two sweets each.
How many sweets does she buy?

24. = 10
5 + 5 = 10

25. Miss Smets buys some pencils.
She buys her seven friends two pencils each.
How many pencils does she buy?

26. = 14
7 + 7 = 14