Addition or subtraction
you have to find like denominators and then you order them from least to greatest by there numerators
Various methods: * Convert the fractions into equivalent fractions with the same denominator; then order by smallest numerator to largest; * Convert the fractions to [approximate] decimals by dividing the numerators by the denominators; then order by the smallest decimal to largest; * Divide the denominators by the numerators; then order by the largest result to the smallest. In all cases list the original fractions.
you must make the denominators the same first in order to add them once they are added, the denominators stay the same and the top combines
In order to subtract or add fractions the denominators must be the same and that's why the LCD must be found.
Convert them to common denominators and put the numerators in ascending order.
Dissimilar fractions have different denominators and their lowest common denominator must be found in order to add them up.
You can convert them to equivalent fractions with like denominators, then simply compare the numerators.You might also convert each fraction to a decimal (divide the numerator by the denominator); then you can also compare them.
Like fractions can be ordered according to their numerators alone. You can ignore the denominators for the process.
In order to add fractions, they must have the same denominators. If the fractions you wish to add do not already have the same denominators, they can be made to do so by finding the right number by which to multiply both the numerator and the denominator of each fraction. To find this number, multiply all the distinct denominators together, then multiply both the numerator and denominator of each fraction by a number found by the dividing the product of the distinct denominators by the denominator of the particular fraction concerned. All the fractions will then have the same denominator. Add the numerators of such fractions together to find the numerator of the sum; its denominator will be the one common to all the fractions.
A common denominator. The best way is to find the LCM (Lowest Common Multiple) of all the denominators - the smallest number into which all the denominators will divide. (The easiest way to do this is to multiply all the different denominators together. Once this common denominator has been found, convert all the fractions into equivalent fractions with this new denominator.
Common Denominator means that the denominators in two (or more) fractions are common, or the same. The common denominator is important because before you can add or subtract fractions, the fractions need to have a common denominator.Sometimes fractions have different denominators, like 2/3 and 3/4. If you want to add or subtract them, they need to have the same denominator. In order to do that, you find a common denominator which is the same thing as a common multiple, only with denominators.
When adding or subtracting fractions with different denominators then their LCD must be found in order to carry out the calculations.