You can find a missing denominator if you know something that the fraction is equal to. Then you can find the missing denominator through cross multiplication.
3 3/8 =
That really depends on what information is given.
An equivalent fraction is just a multiple of the one that you have (i.e it is the one that you have, scaled up or down). So multiply the fraction that you have until either the numerator or the denominator match the given numerator/denominator of the fraction with the missing number. The number in the corresponding place on the fraction that you multiplied is the missing number.
Find the missing term 8,15,28,53,
There can be no missing term in a single number.
Find the GCF of the numerator and the denominator and divide them both by it. If the GCF is 1, the fraction is in its simplest form.
fraction of 0.625 = 5/80.625 * 1000/1000 = 625/1000 or 5/8 in fraction in lowest term