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1.5 Subtracting Integers

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1.5 Subtracting Integers Standards: NS 1.2 and AF 1.3 Objectives: Subtract integers. Subtracting Integers Example 6 - 5 = 1 is the same as 6 + (-5) = 1 So, we want to ... – PowerPoint PPT presentation

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Title: 1.5 Subtracting Integers


1
1.5 Subtracting Integers
  • Standards NS 1.2 and AF 1.3
  • Objectives Subtract integers.

2
Subtracting Integers
  • Example
  • 6 - 5 1 is the same as 6 (-5) 1
  • So, we want to change every subtraction problem
    to ADDITION, then we will use what we already
    have learned!!!!
  • You can use the Two Stick Rule, Keep Change
    Change, or Add the Opposite.
  • Example
  • -9 - 4 becomes -9 -4 which equals -13!

3
Subtracting Integers Change to ADDITION!
  • Find the difference.
  • 5 7
  • -6 8
  • -9 (-9)
  • 5 (-1)
  • 5) 12 26
  • 6) -19 5
  • 7) -35 ( -20)
  • 8) 42 ( -7)

4
Subtracting Integers Change to ADDITION!
  • Find the difference. Use the two stick rule, keep
    change change, or add the opposite every time you
    see a subtraction sign.
  • -3 5 2
  • -8 7 (-8)
  • 4 7 10

5
Practice
  • 1) -6 (-2)

6
Practice
  • 2) -2 11

7
Practice
  • 3) 7 9 (-12)

8
Practice
  • 4) -23 (-8)
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