Adding and Subtracting Integers. Adding and Subtracting Integers 3R 3L Adding and Subtracting Integers Reflection Observe, Question, Comment 08/16/1308/15/13.

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Presentation transcript:

Adding and Subtracting Integers

Adding and Subtracting Integers 3R 3L Adding and Subtracting Integers Reflection Observe, Question, Comment 08/16/1308/15/13 Warm-Up:

Warm-Up 1)7 – (-4) 2) )-8 + (-5) 4)-5 - 2

Adding and Subtracting Integers 3R 3L Adding and Subtracting Integers Reflection Observe, Question, Comment 08/16/1308/15/13 Warm-Up: Standard:

Content Standards NS 1.2 Add, subtract, multiply, and divide rational numbers (integers)

Adding and Subtracting Integers 3R 3L Adding and Subtracting Integers Reflection Observe, Question, Comment 08/16/1308/15/13 Warm-Up: Standard: Objective:

To add and subtract integers. Math Link: You know how to compare and order positive and negative numbers. Now you will learn to add, subtract, multiply and divide them.

Vocabulary: Integers The set of positive whole numbers, their opposites, and zero. (Ex: -2, -1, 0, +1, +2)

Adding and Subtracting Integers 3R 3L Adding and Subtracting Integers Reflection Observe, Question, Comment 08/16/1308/15/13 Warm-Up: Standard: Objective: Notes/Examples: Practice:

Party or War? The addition symbol does not always mean to ADD! The subtraction symbol does not always mean to SUBTRACT!

Problems to Write and Work on the Whiteboard [Party or War?] – (-4)5 – (-3) (-8) – 71 – (-8)-7 – (-7)5 – (-5) 7 – 4 5 – – (-2)

Think of a PARTY when integers have the SAME SIGN... 1.Is it a positive or negative party? 2. ADD the integers.

Think of a WAR when integers have DIFFERENT SIGNS... 1.Who will win? Is there more positives or negatives? 2.SUBTRACT the two integers. 3. Remember your sign!

You Do: Adding Integers (1) (2) (3) (4) (5) (6) (7) (8) (9)

You Do: Adding Integers (1) - 8(2) - 1(3) - 6 (4) - 3(5) - 5(6) - 7 (7) - 4(8) - 9(9) - 2

You Do: Subtracting Integers 1) 8 – 8 2) 8 – 10 3) 0 – 7 4) -5 – 15) -2 – 26) 0 – (-4) 7) -6 – 08) 2 – (-6) 9) (-3) – (-9) 10) -12 – (-7)11) 10 – (-4)

You Do: Subtracting Integers (1) 0(2) - 2(3) - 7 (4) - 6(5) - 4(6) + 4 (7) - 6(8) + 8(9) + 6 (10) - 5(11) + 14

Big Number Practice

You Do: Big Numbers

You Do: Big Numbers = = = = 8287

Big Number Practice

You Do: Big Numbers

You Do: Big Numbers – 398= = = =

Copy Homework Time [Due Next Meeting] – (-2) – (-9)- 9 – (-12)- 3 – – 2320 – (-20) (-25)- 17 – 12

Copy Homework Time [Due Next Meeting] - 2 – 5 – – – (-4) – 20 – – – 1- 3 – 2 – 8 – (-10) 3 – 5 – – (-8) 2 – (-9) – –

Review ( - 1) ( - 12) ( - 2) ( - 12) ( - 19)

Review