Two-Step Multiplication Strip Diagrams

3rd Grade Mathematics

May 16, 2024

2

Do Now

LO: SWBAT represent one and two-step multiplication and
division problems within 100 using pictorial models, strip

diagrams, arrays, and equations.

DOL: SW represent one and two-step multiplication and
division problems within 100 using pictorial models, strip
diagrams, arrays, and equations correctly on 4 out of 5

questions.

TEKS 3.5(B) represent and solve one‐ and two‐step multiplication and division problems within 100 using arrays, strip diagrams, and equations ®

4

Connect the Dots

Model A

Model B

Connect each model with the correct operation.

9

9

9

9

9

9

?

?

?

?

?

?

?

72

Addition

Division

Multiplication

Subtraction

5

Lesson Vocabulary

Product

Quotient

Equation

Array

Strip Diagram

66 ÷ 6 = 11

11 x 6 = 66

11 x 6 = 66

11

11

11

11

11

11

?

GET Strategy for Multiplication & Division

G: number of Groups
E: number of items in Each group
T: Total number of items

Multiplication

Division

G xE =T

T ÷ G = E

Ex G=T

T ÷E = G

Mrs. Baker purchased 6 books of stickers. There are 12 stickers in each book.

Which model can be used to determine the number of stickers in the books?

Let's represent.

12

12

12

12

12

12

F.

G.

H.

J.
6

12

6

6

6

6

6

6

?

12

?

6

????????????

Hudson earned $24 from selling popsicles. He put half of his earnings in
his piggy bank and used the rest to buy 3 comic books, each costing the
same amount.

Which equation can be used to determine the cost of each comic book?

F.

24 x 2 - 3 = $45

G.

24 ÷ 2 ÷ 3 = $4

H.

24 + 2 + 3 = 429

J.24 ÷ 2 x 3 = $36

Angela worked for 8 hours. She earned $9 per hour. She divided her
earnings equally into 4 envelopes. Which equation can be used to find
the amount in each envelope?

A.

8 x 9 x 4 = $288

B.

8 + 9 + 4 = $21

C.

8 x 9 ÷ 4 = $18

D.

8 + 9 - 4 = $13

Let's represent.

Coach Jones packed 7 coolers with bottles of water. He put 9 bottles of
water in each cooler. How many bottles of water did Coach Jones place
in the coolers?

Array

Strip Diagram

Equation

Let's practice.

There are 8 tables at a birthday party, each with 3 vases containing 5
flowers each. Write an equation to determine the total number of
flowers?

F.

8 x 3 + 5 =

G.

8 + 3 + 5 =

H.

8 x 3 x 5 =

J.8 + 3 x 5 =

Let's practice.

SW represent one and two-step multiplication and division problems
within 100 using pictorial models, strip diagrams, arrays, and equations
correctly on 4 out of 5 questions.