1. Home
  2. >Basic Math
  3. >Adding and Subtracting Integers
Help

Subtracting integers

Everything You Need in One Place

Homework problems? Exam preparation? Trying to grasp a concept or just brushing up the basics? Our extensive help & practice library have got you covered.

Learn and Practice With Ease

Our proven video lessons ease you through problems quickly, and you get tonnes of friendly practice on questions that trip students up on tests and finals.

Instant and Unlimited Help

Our personalized learning platform enables you to instantly find the exact walkthrough to your specific type of question. Activate unlimited help now!

Get the most by viewing this topic in your current grade. Pick your course now.

?
Intros
Lessons
  1. Introduction to subtracting integers vertically
?
Examples
Lessons
  1. Subtract using a number line.
    1. (+5) – (+2)
    2. (+9) – (+7)
    3. (-10) – (-3)
  2. George lives 15 floors up from street level in his apartment. He rides down the elevator from his room to a parking level that is two floors below street level. How many floors does he ride down in total?
    1. The temperature recorded in Whitehorse, Yukon on Christmas day is -20 degrees Celsius. On the same day in Hawaii, the temperature is + 25 degrees Celsius. What is the temperature difference between these two places?
      1. Subtracting 1-digit Integers Vertically– Like Signs
        Subtract the following integers vertically.
        1. (+5)−(+2) (+5)-(+2)
        2. (+3)−(+9)(+3)-(+9)
        3. (−2)−(−6) (-2)-(-6)
        4. (−9)−(−7) (-9)-(-7)
      2. Subtracting 1-digit Integers Vertically – Unlike Signs
        Subtract the following integers vertically.
        1. (+3)−(−4) (+3)-(-4)
        2. (−1)−(+6)(-1)-(+6)
      3. Subtracting 2-digit integers Vertically
        Subtract the following integers vertically.
        1. (+36)−(+79) (+36)-(+79)
        2. (−47)−(−82) (-47)-(-82)
        3. (+53)−(−28) (+53)-(-28)
        4. (−25)−(+66)(-25)-(+66)
      ?
      Practice
      Topic Notes
      ?
      In previous sections, we use number lines with arrows to represent given statements. We also learned addition statements. In this section, we are looking at subtraction statements. A thermometer is just like a number line, except thermometers are vertical. As the line on a thermometer moves down, the temperature gets cooler and as the line moves up, the temperature gets warmer. In this section, the blue arrows on the number line will move to the left, or down the number line, and represent negative integers. The red arrows will move to the right, or up the number line, and represent positive integers.

      In this lesson, we will learn:

      • Subtracting 1-digit Integers Vertically– Like Signs
      • Subtracting 1-digit Integers Vertically – Unlike Signs
      • Subtracting 2-digit integers Vertically

      Notes:
      • The order of the integers is NOT interchangeable.
      • Simplify the expression by removing the brackets.
      • Two like signs produce a positive sign.
      • Two unlike signs produce a negative sign.
      Basic Concepts
      ?
      Related Concepts
      ?