Multiplication2 digit x 2 digit

5th Grade Math

CM2 FK2

Learning Objective

I will learn to multiply 2 digit x 2 digit numbers

30 x 45

51 x 19

Steps to use Box Method of Multiplication

STEP 1 Break up the numbers (Write each number in expanded

form)

STEP 2 Draw the box

STEP 3 Place numbers on the box

STEP 4 Multiply all of the numbers

STEP 5 Add up all of the products

Example #1

42 x 3240

30

2

+

1200

80

+

Answer: 1,344

You can be a multiplication master young grasshopper!

2

4

60

Example #2

83 x 5680

50

6

+

4000

480

+

Answer: 4648

Be one with the numbers… use expanded form

3

18

150

Example #3

98 x 4590

40

5

+

3600

450

+

Answer: 4,410

8

320

40

Example #4

34 x 9930

90

9

+

360

36

+

Answer: 3,366

The only weapon I need is my BRAIN! HI-YAH!

4

2700

270

Have you mastered multiplying 2 digits x 2 digits?

Solve each problem to prove you are a multiplication ninja (1 digit x 2 digit)

A. 65 x 48 =

B. 72 x 72=

C. 93 x 43=

Use your calculator after you find your answer to check your answer

3,120

5,184

3,999

Solve and follow the directions:

Solve 45 x 97

Answer: 4,365If the product is less than 4,00 stand near the door

If the product is an even number stand near the carpet

If the product is greater than 4,000 but less than 5,000 sit on the floor near the computers

Solve and follow the directions:

Solve 78 x 41

Answer: 3,198If the product is more than 4,00 but less than 4,300 stand near the computers

If the product is an even number sit on the carpet

If the product has two 8’s in it sit under your desk

Congratulations!

You’ve mastered 2 digit x 2 digit

multiplication!

Multiplication Master