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2 x 2 multiplication

2 x 2 multiplication

Assessment

Presentation

Mathematics

4th Grade

Practice Problem

Medium

CCSS
4.NBT.B.5, 5.NBT.B.5

Standards-aligned

Created by

Chris Lehan

Used 37+ times

FREE Resource

5 Slides • 12 Questions

1

2 x 2 multiplication

Use whichever of the 2 ways works best for you!!!


Always write multiplication problems vertically (Up and Down)


Way #1: Butterfly Way

Way #2: Window (Box) Way

Slide image

2

Way #1 - Butterfly Way

Always go from right to left! Start at the ones place before going to the tens place!


Don't forget your Smiley Face Zero to hold the place!


After doing both lines of multiplication, add up the numbers to get the answer!

3

Slide image

4

Multiple Choice

When doing the butterfly way of multiplication, what do you always include after multiplying the ones place to hold the place?

1

Smiley Face Zero

2

The number 1

3

The number 5

4

The number 8

5

Multiple Choice

In the problem 48 x 36, what would I multiply FIRST?

1

6 x 8

2

6 x 4

3

3 x 8

4

4 x 8

6

Multiple Choice

In the problem 52 x 89, what would I multiply LAST?

1

9 x 2

2

9 x 5

3

8 x 2

4

8 x 5

7

Multiple Choice

Solve this problem using the butterfly way!


Solve: 32 x 65

1

352

2

2080

3

18280

4

1970

8

Way #2 - Window (Box) Way

1) Draw Window


2) Write the value of each place on the outside


3) Multiply the numbers that meet in each box

* Multiply the NOT ZEROES then add any ZEROES behind the number


4) Add the numbers from all 4 boxes

9

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10

Multiple Choice

Question image

What value belongs in the box?

1

5

2

65

3

2

11

Multiple Choice

Question image

What answer belongs in the box?

1

180

2

1,800

3

18

12

Multiple Choice

Question image

What answer belongs in the box?

1

2,080

2

1,080

3

2,180

13

Multiple Choice

Question image

What goes in the box with the question mark?

1

40 x 5

2

30 x 6

3

6 x 40

4

5 x 6

14

Multiple Choice

Solve using the window (box) way!


Solve: 54 x 23

1

1,242

2

1,423

3

1,234

4

2,324

15

Multiple Choice

Solve this problem using the way that works best for you!


Solve: 93 x 24

1

6552

2

2142

3

2232

4

2012

16

Multiple Choice

Challenge Question!!!


Solve this problem using the way that works best for you!


Solve: 96 x 78

1

64132

2

7432

3

7346

4

7488

17

Poll

Which way do you like better for multiplication? (There is no wrong answer!!!)

Butterfly Way

Window (Box) Way

2 x 2 multiplication

Use whichever of the 2 ways works best for you!!!


Always write multiplication problems vertically (Up and Down)


Way #1: Butterfly Way

Way #2: Window (Box) Way

Slide image

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