Multiplication as Repeated Addition
Arrays and Multiplication
Commutative Property
Multiplication Stories
Anything Goes!
100
Write this repeated addition sentence as a multiplication sentence. 1+1+1+1+1=5
What is 5x1=5
100
How many rows are there in this array: 3x6=18
What is there are 3 rows
100
Write the number that makes the second number sentence true. 5x4=20; 4x?=20
What is 5
100
John is having a party. He plans to give each guest 2 party favors. 6 people are coming to John's party. How many party favors will John need? Write a number sentence and solve.
What is 6x2=12; John needs 12 party favors.
100
Mason has 4 boxes of granola bars. There are 5 granola bars in each box. Write and solve a multiplication equation to find how many granola bars Mason has.
What is What is 4x5=gb; Mason has 20 granola bars
200

Write a repeated addition expression that has the same value as 5x2=10. 


What is 2+2+2+2+2=10



200
Priya is arranging 28 chairs with 7 chairs in each row. How many rows of chairs will there be?
What is ? x 7=28; There will be 4 rows of chairs
200
What number makes the second number sentence true? 9x7=63; 7x?=63
What is 9
200
A school's marching band has 3 rows of band members. There are 8 band members in each row. How many students are in the band?
What is 3x8=24; There are 24 band members
200
Henry says, "When you are putting together unequal groups, you can only add." Is he correct? Explain.
What is: Henry is correct. Only equal groups can be multiplied.
300

Write a multiplication expression for this repeated addition sentence, and solve. 6+6+6+6+6 = x

What is 5x6=x;  x=30

300
Mrs. Salinas planted her flowers in 3 rows, with 7 flowers in each row. Write a number sentence that shows how many flowers Mrs. Salinas planted.
What is 3 x 7 = 21
300
How can knowing that 5x13=65 help you find the answer to 13x5 ?
What is: Using the Commutative (Order) Property of Multiplication allows you to change the order of the factors without changing the product.
300

Ben bought 7 bags of apples. Each bag had 8 apples in it. How many apples did Ben buy altogether? Write and solve a multiplication equation for this math story.

What is 7x8=56; 56 apples

300
Can you write 2+3+4=9 as a multiplication sentence? Explain why or why not.
What is No; the groups are not equal.
400

There are 3 groups with 4 objects in each group. Write a repeated addition sentence and a multiplication sentence to show this problem. Solve. 

What is 4+4+4=12; 3x4=12

400
The Carroll family put new tiles on their kitchen floor. A 5x4 array of tiles fit the floor area. How many tiles did they use?
What is 20 tiles
400
Explain the Commutative Property of Multiplication.
What is factors can be multiplied in any order and the product will not change.
400

Alice is buying paper cups for the school picnic. Each package has 8 cups in it. How does the number of cups change as the number of packages increases by 1? 

What is for each additional package, there are 8 more cups. [1 pkg=8 cups; 2 pkgs=16 cups; 3 pkgs=24 cups; 4 pkgs=32 cups; 5 pkgs=40 cups]

400

Duwop is putting books on shelves. Each shelf holds 9 books. How does the number of books change as the number of shelves increases by 1?

What is: There are 9 books on each shelf. As the number of shelves increases by 1, the number of books increases by 9. [1 shelf=9 books; 2_shelves=18 books; 3 shelves=27 books; 4 shelves=36 books, etc.]

500

DuWop wants to give seven (7) stickers to each of his six (6) friends. How many stickers will he need? 

Give a repeated addition sentence AND a multiplication sentence, and solve this problem. 

What is 7+7+7+7+7+7=n;  

What is 6 x 7=n; 

DuWop will need 42 stickers. 

500
Mr. Patriot put flags in his yard for the 4th of July. He arranged his flags in 4 rows, with 5 flags in each row. Which of the following expressions could be used to find how many flags Mr. Patriot put in his yard? 5+5+5+5 [Yes/No]; 4+4+4+4 [Yes/No]; 4x5 [Yes/No]
What is 5+5+5+5 [Yes]; 4+4+4+4 [No]; 4x5 [Yes]
500
Scott and Lauren are making a brick path in the school garden. Scott puts down 6 rows of bricks with 2 bricks in each row. Lauren puts down 4 rows of bricks with 3 bricks in each row. Scott says, "Look! This is what we did in math! We're using the Commutative Property of Multiplication." Lauren does not agree. Who is right? Explain.
What is Lauren is right. Both arrays have the same product (6x2=12 and 4x3=12), but they do not have the same factors.
500

Julianna earns $3 for walking dogs and $5 for washing dogs. How much will Julianna earn if she walks 2 dogs and washes 4 dogs. Explain how you can find the answer.

What is ($3x2) + ($5x4); $6+$20; Julianna will earn $26

500

Describe the pattern in the following numbers. 13, 15, 19, 25.... What number will come next in the series?

33 will come next in the series. The numbers in the list increase by 2, then by 4, then by 6, and so on. The next number will increase by 8; 25+8=33

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