To divide a sum or difference, you need to recall the rule known as BODMAS (Brackets, Open, Divide, Multiply, Add and Subtract). Following this, you can decide which order you can do your mathematical operations in. Time to look at some examples: (2+2) / 2. In this case, you will first add 2 with 2, and divide the result of 4 with 2. The final answer will be 2. How about another one: (10-4) / 2. In this case, you will first subtract 4 from 10, and then divide the result of 6 by 2. The final answer will then be 3. If you are dealing with fractions, you will use the method that utilizes LCM, or the lowest common multiple. Here is an example: 2/4 + 10/2. You will first find the LCM of the denominators of both the fractions. The LCM of 4 and 2 is 4. Now the next step is: 2/4 + (10 x 2)/(2 x 2) = 2/4 + 20/4 = 22/4 = 11/2 or 5.5 (final answer).
When we are performing calculations, we will often have to cover several steps along the way. In this section we demonstrate how to break measures into simpler parts to perform quicker and, in many cases, more accurate answers. You will be presented with a complex fractions and asked to perform a quotient on that value. These worksheets explain how to solve fractions containing addition and subtraction equations in the numerator. Answers may be whole or mixed numbers, or contain subdivisions of measurement units.