If you mean 4/10 then it is 2/5 in its lowest terms
12/25
2/5 is the lowest term
3/20
4/5
22 to 5
1/3
"Lowest terms" refers to the fraction part of a mixed number. To put any fraction in its simplest form, 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 (lowest terms).
15/22
It is: 0.55 = 11/20 as a fraction in its lowest terms
It is: 0.56 = 14/25 as a fraction in its lowest terms
It is in its lowest terms.
Reduction is simply where you put the number to lowest terms. For example 4/10 in lowest terms is 2/5. Ask you teacher or parents for help, they will know what to do.