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Subtracting Integers

Subtracting Integers. Getting colder…going deeper…owing more $. Hot Hot Hot!. If it were 110 degrees outside on Monday morning, and then got 34 more degrees hotter by noon, what would the new temperature be?. 110 + 34 =. Brrrr…….

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Subtracting Integers

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  1. Subtracting Integers Getting colder…going deeper…owing more $...

  2. Hot Hot Hot! If it were 110 degrees outside on Monday morning, and then got 34 more degrees hotter by noon, what would the new temperature be? 110 + 34 =

  3. Brrrr…… If it were -5 degrees outside on Monday morning and then got 7 degrees warmer by noon, what would the new temperature be? -5 + 7 =

  4. That’s REALLY cold! This would never happen in the Rio Grande Valley (but it happens all the time in northern states)… If it were -5 degrees outside on Monday morning and then got 6 more degrees colder by noon, what would the new temperature be? -5 + -6 =

  5. The Integer Song  Same signs, add and keep. Different signs, subtract. Take the sign of the higher number, then you’ll be exact!

  6. So what if I see subtraction? I've got just 3 simple letters for you... K C C

  7. But what is KCC?? K eep C hange C hange

  8. KCC • Any subtraction problem can be rewritten using the KCC method. Keep Change Change 5 - 7 = 7 + - (In this case) CHANGE the “positive 7” to a “negative 7.” KEEP the 5. Don’t do anything to it! CHANGE the “-” sign to an “+” sign.

  9. KCC • Solve the following problems using the KCC method. • 5 – 12 = • 10 – 13 = • 14 – 22 = • 32 – 33 = 5. -5 – 12 = 6. -7 – 11 = 7. -4 – 12 = 8. -3 – 24 =

  10. KCC • Now try these out. Remember, we still use KCC whenever we see subtraction. • 5 – (-12) = • 10 – (-13) = • 14 – (-22) = • 32 – (-33) = 5. -5 – (-12) = 6. -7 – (-11) = 7. -4 – (-12) = 8. -3 – (-24) =

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