1. Subtracting Integers 7 th Grade Math Pg. 103

2. DART statement: I can subtract integers.

3. Subtract Integers  To subtract an integer, add its opposite. What is the opposite of -7? What is the opposite of 3?

4. Examples: 1. 4 – 9 4 + (-9) -5 2.7 – (-10) 7 + 10 17

5. Subtract Positive Integers Find 8 – 13. (To subtract 13, add -13.) 8 + (-13) -5

6. Try one on your own. Find -10 – 7. *To subtract 7, add -7. -10 + (-7) -17

7. Subtract Negative Integers Find 1 – (-2). To subtract -2, add 2. 1 + 2 3

8. Find -10 – (-7) -10 + 7 To subtract -7, add 7. -3 Try these on your own. 4 – (-12) -15 – (-5) 18 – (-6)

9. Evaluate an Expression Evaluate x – y if x = -6 and y = -5. x – y -6 – (-5) -6 + 5

10. Evaluate each expression if a=5, b=-8, and c=-9. 1.) b - 10 2.) a - b 3.) c - a