Integers

Integers- negative and positive whole numbers, including zero.

Examples: -1, 3, 0, 4, 9, -3, 12 , 15

Vocabulary

Vocabulary

Positive number – a number greater than zero.

0 1 2 3 4 5 6-1-2-3-4-5-6

Vocabulary

Negative number – a number less than zero.

0 1 2 3 4 5 6-1-2-3-4-5-6

Integer Addition Rules• If the signs are the same, add the

numbers and keep the sign the same.

8 + 4 = 12-8 + -4 = -12

-8 + -3 =

Now You Try!!

-2 + -15 = -4 + -9 =

Integer Addition Rules• If the signs are different, subtract the

smaller number from the larger number and keep the sign of the bigger number.

7 + -9 = -2 12 + -3 = 9

Now You Try!!

7 + -4 =-3 + 9 = 5 + -11 =

Integer Song

Review

•Integer: Negative or positive whole number, including zero.

•Positive Whole Number: 1, 2, 3, 4,……ect.

•Negative Whole Number: -1, -2, -3, -4, … ect.

Rules: • If the signs are the same, add the numbers

and keep the sign the same. • If the signs are different, subtract the smaller

number from the larger number and keep the sign of the bigger number.

Resources

Need more review? Try some integer games!

http://www.coolmath4kids.com/

http://www.gamequarium.com/math.htm

http://www.sheppardsoftware.com/math.htm

http://www.mathsisfun.com/

*Mathisfun.com not only has fun games and drills but it also has videos for independent study

California State Standard:

2.3 - Solve addition, subtraction, multiplication, and division problems, including those arising in concrete situations, that use positive and negative integers and combinations of these operations.