Exploring Array Addition Techniques

How many rows of blocks are there?

• 5 rows

• 4 rows

• 3 rows

• 2 rows

How many blocks are in each row?

• 3 blocks

• 6 blocks

• 5 blocks

• 4 blocks

What is the total number of blocks when counted by rows?

• 15 blocks

• 10 blocks

• 12 blocks

• 20 blocks

Which of the following represents the correct addition for rows?

• 3 + 3 + 3

• 5 + 5

• 3 + 3 + 3 + 3

• 5 + 5 + 5

How many columns of blocks are there?

• 5 columns

• 6 columns

• 3 columns

• 4 columns

How many blocks are in each column?

• 3 blocks

• 4 blocks

• 2 blocks

• 5 blocks

What is the total number of blocks when counted by columns?

• 12 blocks

• 10 blocks

• 15 blocks

• 20 blocks

Which of the following represents the correct addition for columns?

• 3 + 3 + 3 + 3 + 3

• 5 + 5

• 5 + 5 + 5

• 3 + 3 + 3

Is the total number of blocks the same when counted by rows and columns?

• No

• Only in some cases

• Cannot be determined

• Yes

What mathematical concept does this exercise illustrate?

• Addition

• Subtraction

• Multiplication

• Division