The document provides examples of evaluating expressions involving integers. It begins with the expression -3 - 5 + (-4) - (-2). It then introduces a flow chart for adding and subtracting integers based on rules for using a number line. The flow chart shows that when adding, the value increases, and when subtracting, the value decreases. Several practice problems with solutions are provided. It concludes with homework assignments and prompts for creating a practice problem with mistakes.

1. AIM: Evaluating Expressions
Involving Integers
Do Now
Evaluate the following expression.
a.) -3 - 5 + (-4) - (-2)
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2. ­10 ­9 ­8 ­7 ­6 ­5 ­4 ­3 ­2 ­1 0 1 2 3 4 5 6 7 8 9 10
We are going to create a flow chart for adding and subtracting
integers based on the rules we used when using the number line.
Start at First Number, then when you:
Add Subtract
+ - + -
Increases
Increases Decreases Decreases
Increases
The Value:
Decreases
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3. 1
x - 10 - 2, for x = 6
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4. 2
-13 - x - (-5), for x = 8
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5. 3
-3 - x + (-7), for x = 9
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6. 4
10 + x - (-18), for x = -3
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7. 5
10 + x - (-18), for x = -3
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8. Grade: My Work: Explanation: Corrections:
1.) 15 - 20 + x, if x = -32
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9. Grade: My Work: Explanation: Corrections:
2.) x - 13 + (-51), if x = -4
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10. Grade: My Work: Explanation: Corrections:
3.) y + y - 30, for y = -20
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11. Grade: My Work: Explanation: Corrections:
The highest recorded temperature
on Earth was 126°F. The lowest was
-129°F. What is the difference
between the two temperatures?
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12. Grade: My Work: Explanation: Corrections:
6.) z - (-10) + (-20), for z = 60
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13. Extra Addition Practice
Extra Subtraction Practice
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14. Before You Leave
Create A Problem: Create a problem below containing
mistakes for another group to correct.
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15. Homework
Homework Sheet
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16. AIM: Evaluating Expressions
Involving Integers
Start at First Number, then when you:
Add Subtract
+ - + -
Decreases Decreases Increases
Increases
x - 10 - 2, for x = 6 -13 - x - (-5), for x = 8
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