1. Do Now 10/3/11 Take out your HW from Wednesday. Take out your HW from Wednesday. Textbook page 54, #1-4 all, 13-20 all, 46-50 all, 56 Textbook page 54, #1-4 all, 13-20 all, 46-50 all, 56 Copy HW in your planner. Copy HW in your planner. Text p. 54, #21-38 all, 40-44 evens, 45, & 57 Text p. 54, #21-38 all, 40-44 evens, 45, & 57 Be ready to copy POTW #4. Be ready to copy POTW #4.

2. Homework Textbook page 54, #1-4 all, 13-20 all, 46-50 all, 56 1) 12 1) 12 2) -6 2) -6 3) -2 3) -2 4) 3 4) 3 13) -9 13) -9 14) -6 14) -6 15) 13 15) 13 16) 1 16) 1 17) 7 17) 7 18) -18 18) -18 19) -17 19) -17 20) -3 20) -3 46) 0 46) 0 47) -16 47) -16 48) -19 48) -19 49) 3 49) 3 50) -2 50) -2 56) C 56) C

3. Objective SWBAT use absolute values to perform integer addition SWBAT use absolute values to perform integer addition In your journal, answer the following question. How do you add two integers that have the same sign? How do you add two integers that have different signs? Provide an example for each question. In your journal, answer the following question. How do you add two integers that have the same sign? How do you add two integers that have different signs? Provide an example for each question.

4. Section 2.2 “Adding Integers” Part 2 012345-2-3-4-5 When you ADD a POSITIVE NUMBER POSITIVE NUMBER x + 5 = +5 -4 + 5 = 1 x = -4 -4 + 5 =

5. Addition Using a Number Line 012345-2-3-4-5 When you ADD a NEGATIVE NUMBER NEGATIVE NUMBER 5 + (-7) = -7 5 + (-7) = -2 5 + x = x = -7

6. ABSOLUTE VALUE The distance a number is away from ZERO. Distance is always positive. The distance a number is away from ZERO. Distance is always positive. 012345-2-3-4-5 negative positivezero What is the absolute value of -4? or |-4| |-4| = 4 What is the absolute value of 4? or |4|? |4| = 4 Remember this???

7. |35| = 35 35 + 18 Adding Two Integers with SAME signs To add two integers with the SAME signs, find the sum of their absolute values. Use the sign of the two integers. To add two integers with the SAME signs, find the sum of their absolute values. Use the sign of the two integers. |18| = 18 35 + 18 = 53 = 53 Section 2.2 “Adding Integers” Part 2 |-35| = 35 -35 + (-18) |-18| = 18 35 + 18 = 53 -

8. |-35| = 35 -35 + 18 Adding Two Integers with DIFFERENT signs To add two integers with DIFFERENT signs, find the difference of their absolute values. Use the sign of the integer with the greater absolute value. To add two integers with DIFFERENT signs, find the difference of their absolute values. Use the sign of the integer with the greater absolute value. |18| = 18 35 – 18 = 17 - Because 35 has a greater absolute value than 18 the answer is “negative”.

9. |-43| = 43 -43 + 35 |35| = 35 43 – 35 = 8 - Because 43 has a greater absolute value than 35 the answer is “negative”. |-53| = 53 -53 + 85 |85| = 85 85 – 53 = 32 Because 85 has a greater absolute value than 53 the answer is “positive”.

10. Negative or Positive? Without solving the problem, decide whether the sum will be positive, negative, or zero. Without solving the problem, decide whether the sum will be positive, negative, or zero. 7 + (-4) positive -13 + 11 negative -3 + 3 zero -73 + (-67) negative

11. Try It Out… -43 + 95 = 52 -43 + (-15) = -58 = -58 37 + (-46) = -9 -123 + 162 = 39 -13 + 13 = 0 -83 + 57 = -26

12. “Integer” Cards Red cards = Negative Red cards = Negative Black cards = Positive Black cards = Positive Jack = 11, Queen = 12, King =13, Ace = 1 or 14 Jack = 11, Queen = 12, King =13, Ace = 1 or 14 Dealer deals each player 2 cards. Dealer deals each player 2 cards. The player with the highest sum, gets all the cards from that round. The player with the highest sum, gets all the cards from that round. The player with the most cards at the end of the deck wins! The player with the most cards at the end of the deck wins!

13. Homework Text p. 54, #21-38 all, 40-44 evens, 45, & 57 Text p. 54, #21-38 all, 40-44 evens, 45, & 57