What is 1.6 as a fraction?
1.6 is 16 divided by 10 which can be written
Divide numerator and denominator by the same thing (cancel) in this case divide by 2 to give
Eight fifths is 1 whole (five fifths) and 3 fifths so as a mixed number
I have deliberately shown this as it demonstrates a very useful technique. The short cut is as per the other solution.
1.6 is the same as
Multiply by 1 and you do not change the value. However, 1 comes in many forms.
To simplify the fraction divide top and bottom by 2