integer3

TAdding integers with the same sign means that your answer with have the same sign. (+) + (+) = (+) and (-) + (-) = (-)

Adding integers with different signs means that you subtract the integers and take the sign of the number with the larger absolute value. (+) + (-) = ? and (-) + (-) = ?

 But what about subtraction?

There are lots of ways to think about subtracting integers. Unfortunately, this is one of the concepts that confuses students if they aren't careful.

Let's return to our idea of an Integer War using the Algebra tiles.

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Now, let's look at how this works with a number line.

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Time to play a game again. [|Subtracting Integers]

Here is a great review video of everything that we've done so far with integers.


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 * Video created by [|lhorstman] ||

Time for some homework. Again, you'll need a printer.

Day 1: What are Integers? Day 2: Adding Integers Day 3: Subtracting Integers Day 4: Multiplying Integers Day 5: Dividing Integers Day 6: Test