# Standard One. Fractions!

### The 4 Basic Parts to Understanding Standard One

## Visual Fractions

Lets say you had two fractions, and you wanted to find out which one is bigger. So, lets use 3/12 and 8/12. First you draw a shape, like a rectangle, then you divide it into the number of the denominator, so 12, then shade in the number of the numerator, so 3 and 8, now you can compare, evaluate and analyze these fractions.

## Adding and Subtracting fractions of unlike denominators

Doing this is simple! All you have to do is find the LCD (Least common denominator)! So if you had 1/3 and 1/2, the LCD is.... 6! This is the LCD because its the lowest number that the two denominators, 3 and 2, can go into. Then you multiply the numerator by the amount that it took you to get the LCD. Si 1/3 becomes 2/6 and 1/2 becomes 3/6. Now add and you get 5/6. It's basically the same for subtraction.

## Estimating while adding fractions.

Lets say you had a problem:

3/4+9/10

Lets say you wanted to estimate these. You use the decimals, so 3/4 is .75 and 9/10 is .9, those both round to 1, and

1+1=2

So its roughly 2.

## Dividing/Multiplying fractions

How to multiply and divide fractions you ask? Well their basically the same thing but, I'll get to that later. How you multiply, Is really really simple! All you do is multiply the numerators, multiply the denominators, and reduce the end fraction if necessary. Easy right? Now division. You just flip the second fraction (the one you are dividing by) and multiply! Reduce if possible, and that's it!