1. Adding /Subtracting Integers  Math Aero Standard 5:Level 5 and Level 6  I can understand positive and negative numbers.  I can understand the absolute value and opposite of a number  I can perform operations with Integers  Homework  Worksheet

2. Warm up  Absolute Value

3. Adding integers  Think of walking along a number line. Walk forward for a positive integer and walk backward for negative integer  12 + (-9)  -4 + (-7)  -50 + (-5)

4. Rules for adding Integers Same Sign Find the sum of absolute value Give the sum the same sign as the addends  Difference sign  Find the difference of the absolute values of the two numbers  Give the difference the sign of the addend with the greater absolute value

5. Practice  -8 + 6  -5 + (-14)  13 + 23  8 = (-16)  -3 + 14  5 + (-7)  4 – (-6)

6. Subtracting Integers  Difference between minus sign and a negative number  One is an operation and the other tells you a number is negative  -7 = negative 7  -(-6) = the opposite of negative 6  3-4 = 3 minus 4  3- (-4) = 3 minus negative 4  -6 -7= negative 6 minus 7

7. Rule for subtracting Integers  Subtracting integers is the same as adding its opposite  3 – (-2)=  -4 -1=  1-5  -6 -8=

8. Practice

9. Closure  Weekly Worksheet  Quiz