Adding /Subtracting Integers  Math Aero Standard 5:Level 5 and Level 6  I can understand positive and negative numbers.  I can understand the absolute.

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Presentation transcript:

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

Warm up  Absolute Value

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)  (-5)

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

Practice   -5 + (-14)   8 = (-16)   5 + (-7)  4 – (-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

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

Practice

Closure  Weekly Worksheet  Quiz