Arrays: Rows and Columns in Multiplication
Use rows and columns to write multiplication facts
Arrays: Rows and Columns in Multiplication
Use rows and columns to write multiplication facts
Math - Grade 2-3
- 1
An array has 3 rows with 4 stars in each row. Write a multiplication sentence and find the total number of stars.
The number of rows comes first, and the number in each row comes second.
The multiplication sentence is 3 x 4 = 12. There are 12 stars in all. - 2
Look at an array with 5 rows and 2 columns. How many objects are in the array?
There are 10 objects in the array because 5 x 2 = 10. - 3
Draw an array to show 4 x 3. Then write how many objects are in the array.
Make 4 equal rows, then put 3 objects in each row.
An array for 4 x 3 has 4 rows with 3 objects in each row. There are 12 objects in all. - 4
A baker places muffins in 2 rows. Each row has 6 muffins. Write a multiplication sentence for the muffins.
The multiplication sentence is 2 x 6 = 12. The baker has 12 muffins. - 5
An array shows 4 rows of 5 buttons. What is the total number of buttons?
You can count by fives four times: 5, 10, 15, 20.
There are 20 buttons because 4 x 5 = 20. - 6
Write a multiplication sentence for an array with 6 rows and 3 columns.
The multiplication sentence is 6 x 3 = 18. The array has 18 objects. - 7
A classroom has desks arranged in 3 rows with 5 desks in each row. How many desks are there in all?
Each row has the same number of desks.
There are 15 desks in all because 3 x 5 = 15. - 8
Circle the multiplication sentence that matches 2 rows of 7 dots: 2 x 7 = 14, 7 x 2 = 9, or 2 x 5 = 10.
The correct multiplication sentence is 2 x 7 = 14 because there are 2 rows with 7 dots in each row. - 9
An array has 8 objects total. It has 2 rows. How many objects are in each row?
Share 8 objects equally into 2 rows.
There are 4 objects in each row because 2 x 4 = 8. - 10
A garden has 4 rows of flowers. Each row has 4 flowers. Write the multiplication sentence and total.
The multiplication sentence is 4 x 4 = 16. There are 16 flowers in the garden. - 11
Draw an array for 5 x 3. Label the rows and columns.
Rows go across, and columns go up and down.
An array for 5 x 3 has 5 rows and 3 columns. It has 15 objects in all. - 12
A sticker sheet has 3 rows with 6 stickers in each row. How many stickers are on the sheet?
There are 18 stickers on the sheet because 3 x 6 = 18. - 13
Write an addition sentence and a multiplication sentence for 4 rows of 2 squares.
Add the number in each row one time for every row.
The addition sentence is 2 + 2 + 2 + 2 = 8. The multiplication sentence is 4 x 2 = 8. - 14
An array has 3 columns with 4 objects in each column. How many objects are in the array?
Columns go up and down, but they can still show equal groups.
There are 12 objects in the array because 3 x 4 = 12. - 15
Sam says an array with 2 rows of 5 is the same total as an array with 5 rows of 2. Is Sam correct? Explain.
The arrays may look different, but compare the totals.
Sam is correct. Both arrays have 10 objects because 2 x 5 = 10 and 5 x 2 = 10.