0.00081 = 81/100000.
There are no common factors other than 1 between 81 and 100000, so this is the simplest it can be.
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0.00081 in scientific notation is: 8.1 × 10-4
There cannot be a whole fraction. If it is a fraction it is not whole and if it is whole it is not a fraction.
No, every fraction is not a unit fraction because unit fraction must have 1 as numerator but every unit fraction is a fraction such as 2/3 is a fraction but not considered a unit fraction and 1/3 which is a unit fraction is also called fraction
That's a complex fraction.
Improper fraction is greater than a proper fraction.