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[object Object],[object Object],[object Object],[object Object],[object Object],752 45.81
Addition of Integers Section 2.2 P. 63
Properties of Addition ,[object Object],[object Object],[object Object]
Properties of Addition ,[object Object],[object Object],[object Object],[object Object],[object Object]
Properties of Addition ,[object Object],[object Object],[object Object]
5 + 3 = 8  Up 5 , then up 3 more  If you have $5 in your pocket and are given $3 more, how much do you have? -5 + (-3) = -8  Down 5 then down 3 more If you owe $5 and then borrow $3 more, how much do you have?
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
EXAMPLE 1 Adding Integers Using a Number Line Use a number line to find the sum. a. 5 + (  8) – Start at  0 . Move  5  units to the right. Then move  8  units to the left.
EXAMPLE 1 Adding Integers Using a Number Line Use a number line to find the sum. a. 5 + (  8) – Start at  0 . Move  5  units to the right. Then move  8  units to the left. Answer The final position is  –3 . So,  5 + (–8) = –3 .
EXAMPLE 1 Adding Integers Using a Number Line Use a number line to find the sum. b.   – 6 + 10 Start at  0 . Move  6  units to the right. Then move  10  units to the left.
EXAMPLE 1 Adding Integers Using a Number Line Use a number line to find the sum. b.   – 6 + 10 Start at  0 . Move  6  units to the right. Then move  10  units to the left. Answer The final position is  4 . So,  –6  + 10 = 4 .
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],-20 -4 9 -14 12 -13 0 -5
[object Object],[object Object],[object Object],[object Object]

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2.2 add integers ws day1

  • 1.
  • 2.
  • 3. Addition of Integers Section 2.2 P. 63
  • 4.
  • 5.
  • 6.
  • 7. 5 + 3 = 8 Up 5 , then up 3 more If you have $5 in your pocket and are given $3 more, how much do you have? -5 + (-3) = -8 Down 5 then down 3 more If you owe $5 and then borrow $3 more, how much do you have?
  • 8.
  • 9.
  • 10. EXAMPLE 1 Adding Integers Using a Number Line Use a number line to find the sum. a. 5 + ( 8) – Start at 0 . Move 5 units to the right. Then move 8 units to the left.
  • 11. EXAMPLE 1 Adding Integers Using a Number Line Use a number line to find the sum. a. 5 + ( 8) – Start at 0 . Move 5 units to the right. Then move 8 units to the left. Answer The final position is –3 . So, 5 + (–8) = –3 .
  • 12. EXAMPLE 1 Adding Integers Using a Number Line Use a number line to find the sum. b. – 6 + 10 Start at 0 . Move 6 units to the right. Then move 10 units to the left.
  • 13. EXAMPLE 1 Adding Integers Using a Number Line Use a number line to find the sum. b. – 6 + 10 Start at 0 . Move 6 units to the right. Then move 10 units to the left. Answer The final position is 4 . So, –6 + 10 = 4 .
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.