1 / 17

Warm Up

Warm Up. Problem of the Day. Lesson Presentation. Lesson Quizzes. –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7. Warm Up Graph each number on a number line. 1. –5 2. 7 3. –4 4. 0. Problem of the Day

mari
Download Presentation

Warm Up

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Warm Up Problem of the Day Lesson Presentation Lesson Quizzes

  2. –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 Warm Up Graph each number on a number line. 1. –5 2. 7 3. –4 4. 0

  3. Problem of the Day Start at 0 on a number line. Move 5 units left and 3 units right. Where are you on the number line? –2

  4. Learn to add integers.

  5. 2 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 Helpful Hint To add a positive number move to the right. To add a negative number move to the left. Additional Example 1A: Using a Number Line to Add Integers Use a number line to find the sum. (–6) + 2 –6 You finish at –4, so (–6) + 2 = –4.

  6. –3 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 Additional Example 1B: Using a Number Line to Add Integers Use a number line to find the sum. –3 + (–6) –6 You finish at –9, so –3 + (–6) = –9.

  7. 7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 Check It Out: Example 1A Use a number line to find the sum. (–3) + 7 –3 You finish at 4, so (–3) + 7 = 4.

  8. 4 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 Check It Out: Example 1B Use a number line to find the sum. (–2) + 4 –2 You finish at 2, so (–2) + 4 = 2.

  9. When adding integers, we must separate the problems in two groups. Same signs Different signs

  10. Additional Example 2: Using Absolute Value to Add Integers Add. A. 1 + (–2) 1 + (–2) –1 B. (–8) + 5 (–8) + 5 –3

  11. Additional Example 2: Using Absolute Value to Add Integers Add. C. (–2) + (–4) (–2) + (–4) –6

  12. Check It Out: Example 2 Add. A. 3 + (–6) 3 + (–6) –3 B. (–4) + 1 (–4) + 1 –3

  13. Check It Out: Example 2C Add. C. (–6) + (–7) (–6) + (–7) –13

  14. Additional Example 3: Evaluating Expressions with Integers Evaluate c + 4 for c = –8. c + 4 (–8) + 4 Replace c with –8. -4 8 > 4; use the sign of 8.

  15. Check It Out: Example 3 Evaluate d + 7 for d = –3. d + 7 (–3) + 7 Replace d with –3.

  16. Additional Example 4: Application Meka opened a new bank account. Find her account balance after the first four transactions listed below. Deposits: $200, $20 Withdrawals: $166, $38 Use a positive sign for deposits and a negative sign for withdrawals. 200 + 20 + (–166) + (–38) Add integers within each group. 220 + (–204) 16 Meka’s account balance after the first four transactions is $16.

  17. Check It Out: Example 4 Michael opened a new bank account. Find his account balance after the first four transactions listed below. Deposits: $175, $95 Withdrawals: $133, $65 Use a positive sign for deposits and a negative sign for withdrawals. 175 + 95 + (–133) + (–65) 270 + (–198) Add integers within each group. 72 Michael’s account balance after the first four transactions is $72.

More Related