Multiplication Lesson with Arrays and Repeated addition

Multiply: Equal Groups Using Repeated Addition and Arrays

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Multiple Choice

POP QUIZ: How many rows are shown on the array?

• 6 rows

• 2 rows

• 3 rows

• 8 rows

Tips

• Rows before Columns when you write an equation to match the array

• Each group or row has an equal amount

• Check your product/answer using repeated addition.

• Commutative Property: If the two factors are reversed, you still get the same product. 2 x 3 = 3 x 2

Multiple Choice

How many rows?

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​​How many columns?

• 3 rows

  4 columns

• 4 rows

  4 columns

• 3 rows

  3 columns

• 4 rows

  4 columns

Multiple Choice

Which sentence is correct?

• Rows go side to side, columns go side to side.

• Rows go up and down, columns go up and down.

• Rows go side to side, columns go up and down.

• Rows go up and down, columns go side to side.

Multiple Choice

How many columns are shown in this array?

• 9

• 3

• 5

• 6

Do 10 jump squats!

Remember... rows before columns.

​There are different ways to figure out how many total circles are in this array.

​4 + 4 + 4 =12

You can add up the circles in each row.

4 , 8, 12

You can skip count by 4 three times.

4 8 12

​4

​4

​4

​Let's try one together......

​Think (on your own) -

How many rows?

How many colums

​You can multiply the number of rows by the number in each row.

​ 1. 2. 3. 4.

​1

​2

​3

Multiple Choice

Which number sentence represents this array correctly?

• 5 x 2 = 10

• 2 x 5 = 10

Multiple Choice

Which number sentence represents this array correctly?

• 3 x 6 = 18

• 6 x 3 = 18

Do 18 high knees!

Remember... an array model should have equal groups.

​Let's try one together......​Pair (shoulder partner)

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How would you write a multiplication equation to match this array?

​Let's try one together......​Pair (shoulder partner) -

How would you write a repeated addition sentence to match this array?

Multiple Choice

How would you write a multiplication equation to match this array?

• 4 x 4 x 4 x 4 = 16

• 4 x 4 = 16

Multiple Choice

Which of the following shows a repeated addition sentence to match this array?

• 4 + 4 + 4 + 4 = 16

• 4 + 4 + 4 = 12

Multiple Choice

Which number sentence represents this array correctly?

• 4 x 5 = 20

• 5 x 4 = 20

Multiple Choice

6 rows of 4 cars in each row equals...

• 10

• 12

• 24

• 30

Multiple Choice

What is the repeated addition sentence for this array?

• 6 + 6 + 6 + 6

• 4 + 4 + 4 + 4 + 4 + 4

Drag and Drop

This array shows ​

Placeholder

rows of 2 cookies equals ​

Placeholder

cookies.

Drag these tiles and drop them in the correct blank above

2

4

5

1

Match

Help Demetrius match the array to the equation.

4x10

4x5

4x8

4x3

• 4x10

• 4x5

• 4x8

• 4x3

Multiple Choice

3 rows of 3 sharks in each row equals...

• 0

• 6

• 9

• 3

Multiple Choice

What is the repeated addition sentence for this array?

• 3 + 3 + 3

• 3 + 3

• 3 x 3

Do 20 arm circles!

10 going forward and 10 going backward.

Remember... multiplication is repeated addition.

Multiple Choice

What's the equation for this array?

• 5 x 4 = _

• 5 x 5 = _

• 4 x 5 = _

• 4 x 4 = _

Multiple Choice

What is the repeated addition sentence for this array?

• 4 + 4 + 4 + 4 + 4

• 5 + 5 + 5 + 5

• 4 + 4 + 4 + 4

• 5 + 5 + 5 + 5 + 5

Multiple Choice

What's the product for this array?

• 16

• 20

• 25

• 9

Multiple Choice

Which multiplication statement matches the repeated addition shown?

4 + 4 + 4

• 3 x 4 = 12

• 4 x 4 = 16

• 4 x 2 = 8

• 4 x 1 = 4

Multiple Choice

Which multiplication statement matches the repeated addition shown?

5 + 5 + 5 + 5

• 2 x 5= 10

• 5 x 6= 30

• 4 x 5= 20

• 5 x 1= 5

Do 9 standing marches!

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Multiple Choice

What multiplication sentence does this repeated addition sentence represent?
6 + 6 + 6 + 6 + 6 + 6 = 

• 6 x 5 = 
• 6 x 6 = 
• 6 + 6 = 
• 6 x 0 = 

Multiple Choice

Which repeated addition sentence shows this multiplication sentence?
5 x 7 = 

• 7 + 5 = 
• 5 + 5 + 5 +7 = 
• 7 + 7 +7 + 7 + 7 = 
• 7 + 7 + 7 = 

Multiple Choice

How can I represent this array model as a multiplication equation?

• 6 + 6 = 12

• 3 x 4 = 12

• 6 + 3 = 9

• 6 x 2 = 12

Multiple Choice

Aaron says that he arranged his star collection with 4 rows and 3 stars on each row . Which array model fits the description?

Open Ended

Represent this array as a multiplication equation.

Poll

I am comfortable using arrays, equal groups, and repeated addition to solve multiplication problems.

• Yes. Absolutely

• No way

• Kind of