- Created by: Harry Ockenden
- Created on: 24-04-17 17:52
- When adding fractions there needs to be a common denominator e.g. 1/3 and 2/3
- If you have two fractions that have different denominators then you must maker them the same e.g. 1/3 and 3/4
- In order to do this multiply the denominators together e.g. 3 x 4. This gives you 12, which is now the common denominator.
- Then you must also multiply the numerator by the number that you multiplied the denominator of that fraction by e.g. 1 x 4, and 3 x 3. This gives you the numerator for your two new fractions with a common denominator.
- Now add the two new fractions together e.g. 4/12 + 9/12 = 13/12
- Then simplify your final answer. In this case the example cannot be simplified.
- When mulitplying fractions, you do not need a common denominator.
- Multiply the two top numbers together and then the two bottom number together. This gives you the answer e.g. 1/3 x 3/4 = 3/12
- For subtracting you need a common denominator like in adding fractions.
- The instead of adding them, subtract them e.g. 9/12 - 4/12 = 5/12
- When dividing fraction you do not need a common denominator
- Turn one of your two fractions upside down and change the divide sign into a multiply sign e.g. 1/3 / 3/4 = 1/3 x 4/3
- Now answer this like a normal multiplication of fractions e.g. 1/3 x 4/3 = 4/9
- Simplifying fractions means getting a fraction to its simplest form e.g 3/6 = 1/2 however 1/2 is the simplest for of this fraction.
- In order to simplify a fraction just find a common factor of the numerator and denominator and divide them both by it. Keep dividing using different numbers at different points, until the fraction is as simple as possible.
- Linear factor = length ratio
- Area Factor = Scale Factor squared
- Volume Factor = Scale Factor…