Multiplying and Dividing Integers

Presentation

•

Mathematics

•

6th - 8th Grade

•

Practice Problem

•

Medium

•

CCSS

7.NS.A.2A, 7.NS.A.1C, 7.NS.A.2C

Standards-aligned

Ryan Heywood

Used 9+ times

FREE Resource

34 Slides • 30 Questions

Multiplying and Dividing Integers

by Ryan Heywood

2 x 3 =

2 x 3 = 6

2 x 2 =

2 x 3 = 6

2 x 2 = 4

2 x 3 = 6

2 x 2 = 4

2 x 1 =

2 x 3 = 6

2 x 2 = 4

2 x 1 = 2

2 x 3 = 6

2 x 2 = 4

2 x 1 = 2

What problem comes next?

2 x 3 = 6

2 x 2 = 4

2 x 1 = 2

2 x 0 =

2 x 3 = 6

2 x 2 = 4

2 x 1 = 2

2 x 0 = 0

2 x 3 = 6

2 x 2 = 4

2 x 1 = 2

2 x 0 = 0

2 x -1 =

2 x 3 = 6

2 x 2 = 4

2 x 1 = 2

2 x 0 = 0

2 x -1 = -2

2 x 3 = 6

2 x 2 = 4

2 x 1 = 2

2 x 0 = 0

2 x -1 = -2

What patterns do you see?

2 x 3 = 6

2 x 2 = 4

2 x 1 = 2

2 x 0 = 0

2 x -1 = -2

2 x -2 =

Lets continue

2 x 3 = 6

2 x 2 = 4

2 x 1 = 2

2 x 0 = 0

2 x -1 = -2

2 x -2 = -4

Lets continue

2 x 3 = 6

2 x 2 = 4

2 x 1 = 2

2 x 0 = 0

2 x -1 = -2

2 x -2 = -4

2 x -3 =

Lets continue

Multiple Choice

$-4\ \times\ 3$

-12

-1

Multiple Choice

$4\ \times\ -3$

-12

-1

2 x 3 = 6

2 x 2 = 4

2 x 1 = 2

2 x 0 = 0

2 x -1 = -2

2 x -2 = -4

2 x -3 = -6

When one integer is negative

the answer is negative

Let's try it another way

2 x -3 =

2 x -3 = -6

When one integer is negative

the answer is negative

2 x -3 = -6

2 x -2 =

When one integer is negative

the answer is negative

2 x -3 = -6

2 x -2 = -4

When one integer is negative

the answer is negative

2 x -3 = -6

2 x -2 = -4

2 x -1 =

When one integer is negative

the answer is negative

2 x -3 = -6

2 x -2 = -4

2 x -1 = -2

When one integer is negative

the answer is negative

2 x -3 = -6

2 x -2 = -4

2 x -1 = -2

2 x 0 =

When one integer is negative

the answer is negative

2 x -3 = -6

2 x -2 = -4

2 x -1 = -2

2 x 0 = 0

When one integer is negative

the answer is negative

2 x -3 = -6

2 x -2 = -4

2 x -1 = -2

2 x 0 = 0

-2 x -1 =

When one integer is negative

the answer is negative

2 x -3 = -6

2 x -2 = -4

2 x -1 = -2

2 x 0 = 0

-2 x -1 = 2

When one integer is negative

the answer is negative

When both integers are negative

the answer is positive

2 x -3 = -6

2 x -2 = -4

2 x -1 = -2

2 x 0 = 0

-2 x -1 = 2

-2 x -2 =

When one integer is negative

the answer is negative

When both integers are negative

the answer is positive

2 x -3 = -6

2 x -2 = -4

2 x -1 = -2

2 x 0 = 0

-2 x -1 = 2

-2 x -2 = 4

When one integer is negative

the answer is negative

When both integers are negative

the answer is positive

2 x -3 = -6

2 x -2 = -4

2 x -1 = -2

2 x 0 = 0

-2 x -1 = 2

-2 x -2 = 4

-2 x -3 =

When one integer is negative

the answer is negative

When both integers are negative

the answer is positive

2 x -3 = -6

2 x -2 = -4

2 x -1 = -2

2 x 0 = 0

-2 x -1 = 2

-2 x -2 = 4

-2 x -3 = 6

What patterns do you see?

Multiple Choice

$10\ \times\ -2$

-12

-20

Multiple Choice

$-5\ \times-2$

-10

-7

Multiple Choice

$-4\ \times\ -3$

-12

-1

Multiple Choice

$-4\ \times\ 3$

-12

-1

Multiple Choice

$7\ \times\ -6$

-42

-1

Multiple Choice

$-7\ \times\ -6$

-42

-1

Multiple Choice

$7\ \times\ 6$

-42

-1

Multiple Choice

$20\ \div\ -5$

-4

-15

Multiple Choice

$-20\ \div\ 5$

-4

-15

Multiple Choice

$-20\ \div\ -5$

-4

-15

Multiple Choice

$-10\ \div\ -2$

-5

-8

-12

Multiple Choice

$10\ \div\ -2$

-5

-8

-12

Multiple Choice

$-15\ \div\ -5$

-3

-10

-20

Multiple Choice

$30\ \div\ -3$

-10

Multiple Choice

$-15\ \div\ 5$

-3

-10

-20

Multiple Choice

$-15\ \div\ -5$

-3

-10

-20

Multiple Choice

$-15\ \div\ -5$

-3

-10

-20

Multiple Choice

$-5\ +\ -5$

-10

-25

Remember 2 negatives make a positive ONLY when multiplying and dividing NOT when adding and only sometimes when subtracting.

Multiple Choice

$2\ \times-3\ \times2$

-12

-8

-6

Multiple Choice

$-2\ \times-3\ \times2$

-12

-8

-6

Multiple Choice

$-5\ \times-5\ \times-1$

-25

-11

-5

Multiple Choice

$5\ \times-5\ \times-1$

-25

-11

-5

Multiple Choice

$5\ \times-5\ \times1$

-25

-11

-5

Multiple Choice

$-1\times-1\times-1\times-1\times-1\times-1\times-1\times-1$

-1

-8

Multiple Choice

$-1\times-1\times-1\times-1\times-1\times-1\times-1$

-1

-7

Multiple Choice

$-27\ \times56$

1,512

-1,512

1,539

-1,539

Multiple Choice

$-123\ \times-123$

15,129

-15,129

12,123

-12,123

Multiple Choice

$-123\ \times-123$

15,129

-15,129

12,123

-12,123

Multiplying and Dividing Integers

by Ryan Heywood

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