It helps with adding and multiplying fractions sometimes. Its simpler to multiply 3/7 x 9/7 than 1 2/7 x 3/7.
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Mixed numbers can be converted to improper fractions. Improper fractions can be added the same way proper fractions are.
if you have mixed numbers you make them into improper fractions before you multiply
Mixed numbers cannot be turned into proper fractions, but they can be made into improper fractions by multiplying the integer (# on the side) by the denominator (bottom), and then adding that number to the numerator (top).
Change the mixed numbers into improper fractions and carry out the calculations accordingly
Mixed numbers can be converted to improper fractions. Then, it is exactly the same as adding proper ones.