You need to understand that a mixed number such as 5 1/3 really means 5 plus 1/3. You can do your calculations accordingly. To add and subtract, you can add and subtract the whole part and the fractional part separately. To multiply or divide, you can convert the numbers to improper fractions first - though in some cases it is easier to use the distributive property.
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Because common denominators allow adding and subtracting of numerators. Improper fractions also have simplified rules over mixed numbers when performing multiplication and division.
what is the definition for dividing mixed numbers
Find the sum of two mixed numbers by applying the procedure for adding mixed numbers, Solve a real-world problem by subtracting mixed numbers.
Mixed numbers have fractional parts that must be compared; whole numbers do not.
When you perform calculations with mixed units, you need to be consistent in your use of those units. For instance, if something is 3 feet and 3 inches long, it is better to convert to entirely feet (3.25) or to entirely inches (39) before using that measurement in a calculation.