Mathletes Fab Five 1) -12 + (-66) + (-48) 2) A football team receives a 5- yard penalty on one play and a 10-yard penalty on the next. Write a sum.

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Presentation transcript:

Mathletes Fab Five 1) (-66) + (-48) 2) A football team receives a 5- yard penalty on one play and a 10-yard penalty on the next. Write a sum of negative integer to represent this situation. 3) Eli had mini-golf scores of -3, -4, and -3. What was his total score for the three rounds? 1) ) -5+ (-10) 3) -10

Adding Integers with Different Signs Lesson 1.2

Start from 0 Positive go right Negative go left Answer is at your final destination Modeling on the Number Line Examples: 1.) 4 + (-3) 2.) = 1 = -2

Zero Pair: When you add a positive integer and a negative integer the result is zero 1+( -1) =0 Example: Vocabulary Word One positive One negative Cancels each other

Group together your Zero Pairs What is left over is your answer Modeling Using Red/Yellow Tiles Examples: 1.) 3 + (-2) 2.) = 1 = -3

How do you add integers with different signs? 1.Find the absolute values 2.Subtract the smaller absolute value from the larger. 3.Use the sign of the integer with the greater absolute value. Essential Question

Remember: Different sign subtract Keep the sign of the larger number

Examples: 1.) ) 13 + (-13) 3.) 10 + (-18) 4.) 25 + (-26) Add the integers

Homework Workbook Page (#1-25 ALL)