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Lesson 3-4 Pages 120-124

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Lesson 3-4 Pages 120-124

Adding Integers

Lesson Check 3-3

What you will learn!

How to add integers.

Vocabulary

What you really need to know!

Adding Integers with the Same Sign:

Add their absolute values. Give the result the same sign as the integers.

Adding Integers with Different Signs:

Subtract their absolute values. Give the result the same sign as the integer with the greater absolute value.

What you really need to know!

A number line can help you walk to the right answer!

Example 1:

-13

-12

-11

-10

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

-6 + -3

-9

Example 2:

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

8 + (-7)

1

Example 3:

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

-5 + 4

-1

Example 4:

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

2 + -7

-5

Example 5:

-10

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

-9 + 6

-3

Example 6:

-64

-44

-10

-63

-43

-9

-62

-42

-8

-41

-61

-7

-40

-6

-60

-39

-5

-59

-4

-38

-58

-37

-3

-57

-2

-36

-56

-35

-1

-55

0

-34

-54

-33

-53

1

-52

-32

2

3

-31

-51

-30

-50

4

-34 + -21

-55

Page 122

Guided Practice

#’s 5-10

Read:

Pages 120-122 with someone at home and study examples!

Homework: Page 123-124

#’s 12-58 even

#’s 62-69

Lesson Check 3-4

Page

570

Lesson 3-4

Lesson Check 3-4

Mid-Chapter Practice Test

Page

116

#’s 1-16

Lesson Check 3-4

E

D

F