FRACTIONS
By Brink
Adding and subtracting fractions
Adding fractions is easy.
For example let's take the fractions 1/2 and 2/4.
Step 1: make the 2 denominators the the same that would be 2/4 and 2/4.
Step 2: now add 2/4 + 2/4 = 4/4 = 1 whole.
If you still don't understand here is a virtual nerd video.
Subtraction
Step 1: make the denominators the same that would be 3/4 and 2/4.
Step 2: now subtract the fractions 3/4-2/4=1/4.
If you still don't understand here is a virtual nerd video.
Sultiply fractions
This is easy very easy.
So lets take 1/4 x 1/2 as example.
All you do is multiply across.
That is equal to 1/8.
Under this is a video so you can remember it.
Dividing fractions
Let take 3/4:1/2 as an example.
You keep the first fraction then you change to multiplication and flip the other fraction.
Then you multiply across.
3/4 x 2/1
That is equal to 6/4 but you can simplify so.
Lets do that and that is 1 2/4 and your done.
To remember their is a video and it is fun.
Multiplying decimals
So lets take 3.2 x 2.4 as an example.
First multiply without the decimal point 32 x 24 =768.
Now you have to put the decimal point back.
So count the digits behind the decimal and that is two.
So put the decimal point 2 spaces to the left from the last digit.
In this case the answer is 7.68
If you don't understand, there is a video underneath this.
Dividing decimals
So let's take 12.4 : 3.1 as an example.
First you take away the decimals.Then we get the numbers 124 and 31.
Then you divide 124:31=4. There is no decimal that we have to put back so are answer is 4
If you don't understand, there is a virtual nerd underneath this.