2. Transparency 5 Click the mouse button or press the Space Bar to display the answers.

3. Splash Screen

4. Example 5-1a Objective To subtract integers

5. Example 5-1a Vocabulary None

6. Example 5-1a Subtraction Rule # 1 4 - 7 Separate numbers with sign in front of number 4 - 7 Place a positive sign between them, then follow the addition rules 4 + - 7

7. Example 5-1a Subtraction Rule # 2 4 - ( - 7 ) Combine the 2 negative signs to make a positive 4 + 7 Follow the addition rules

8. Lesson 5 Contents Example 1Subtract a Positive Integer Example 2Subtract a Positive Integer Example 3Subtract a Negative Integer Example 4Subtract a Negative Integer Example 5Evaluate Algebraic Expressions Example 6Evaluate Algebraic Expressions

9. Example 5-1a Find 1/6 Write problem 2 - 6 Separate numbers with sign in front of number 2 - 6 Place a positive sign between them, then follow the addition rules 2 + - 6 Draw arrows to the signs Determine if the signs are the same or different Different

10. Example 5-1a Find 1/6 2 - 6 2 + - 6 Different Different signs, subtract the numbers without the signs 6 - 2 (Remember: big number - small number) 4 Keep sign of largest number which is negative - 4 Answer: - 4

11. Example 5-1b Find 1/6 Answer: - 4

12. Example 5-2a Find 2/6 Write problem Separate numbers with sign in front of number - 7 - 5 Place a positive sign between them, then follow the addition rules - 7 + - 5 Draw arrows to the signs Determine if the signs are the same or different Same

13. Example 5-2a Find 2/6 - 7 - 5 - 7 + - 5 Same 12 Same sign, add the numbers without the signs 7 + 5 Keep the sign which is - Answer: - 12 - 12

14. Example 5-2b Find 2/6 Answer: - 8

15. Example 5-3a Find 3/6 Write problem 11 - ( - 8 ) Combine the negative signs and make a positive sign 11 + 8 Draw arrows to the signs Determine if the signs are the same or different Same Same sign, add the numbers without the signs 11 + 8 19 Keep the sign which is + Answer: 19

16. Example 5-3b Find 3/6 Answer: 18

17. Example 5-4a Find 4/6 Write problem - 6 - ( - 9 ) Combine the negative signs and make a positive sign - 6 + 9 Draw arrows to the signs Determine if the signs are the same or different Different

18. Example 5-4a Find 4/6 - 6 - ( - 9 ) - 6 + 9 Different Different signs, subtract the numbers without the signs 9 - 6 (Remember: big number - small number) 3 Keep sign of largest number which is negative Answer: 3

19. Example 5-4b Find 4/6 Answer: 4

20. Example 5-5a Evaluate 5/6 Write problem 12 - r Replace r with - 7 12 - Combine the negative signs and make a positive sign 12 + 7 Draw arrows to the signs Determine if the signs are the same or different Same Bring down 12 - 12 - ( - 7 )

21. Example 5-5a Evaluate 5/6 12 - r 12 - ( - 7 ) 12 + 7 Same Same sign, add the numbers without the signs 12 + 7 19 Keep the sign which is + Answer: 19

22. Example 5-5b Evaluate 5/6 Answer: 12

23. Example 5-6a Evaluate 6/6 Write problem q - p Replace q with - 3 Replace p with 6 -3 Bring down the - sign -3 --3 - 6 Separate numbers with sign in front of number -3 - 6 Place a positive sign between them, then follow the addition rules -3 + - 6

24. Example 5-6a Evaluate 6/6 q - p -3 -3 --3 - 6 -3 + - 6 Draw arrows to the signs Determine if the signs are the same or different Same Same sign, add the numbers without the signs 3 + 6 9 Keep the sign which is - - 9 Answer: - 9

25. Example 5-6b Evaluate * 6/6 Answer: - 9

26. End of Lesson 5 Assignment Lesson 1:5Subtracting Integers12 - 41 All