Integers

Click here to see Abbie's [|powerpoint] on 'how to add or subtract integers'' Check out Sara T's powerpoint

Check out Shanae's powerpoint

Here is a link to [|harder word problems] (extension work)
Integers involve both positive and negative numbers. One effective way to solve integer problems is to use a number line

When you add; move to the Right When you subtract; move to the Left media type="youtube" key="ZxbXjORORSU?version=3" height="321" width="524" align="right" For example:

1. -6 + 9 = 3 2. 5 - 11 = -6

If you find two signs NEXT TO each other, circle them both and change it to only one sign If the signs are the same - - OR ++ change them to a + If the signs are NOT the same -+ OR +- change them to a -

For example:

1. -6 -+7 = -6 -7 = -13

2. -7 - - 4 = -7 + 4 = -3

media type="youtube" key="RDw3Gq-heTw?version=3" height="294" width="480"

Multiplying and Dividing Integers
If your problem has 1 negative number the answer will also be a negative. Start solving your problem by pretending there are no negative signs and then work out if the answer is negative or positive last. (if there are two negative signs the answer is positive) Eg: -5 X 6 = -30 Eg 2: -21 ÷ -7 = 3 Eg3: -40 ÷ 10 x -2 = Try these: 1. 3 X -6 = 2. 50 ÷ -5 = 3. -12 X -2 ÷ 6 = 4. 6 X -2 + 4 = 5. 6 - 8 ÷ 2 = 6. -7 X -4 ÷ -2 7. 1 - 7 X -3 = 8. 12÷ -4 + 3 X -2 =