Question

how can i find \\(\frac{1}{4}\\) of 20?
complete the sentence.
to find \\(\frac{1}{4}\\) of 20, divide 20 by \\(\boxed{4}\\).
now, find \\(\frac{1}{4}\\) of 20.
\\(\frac{1}{4}\\) of 20 is \\(\boxed{5}\\).
key idea
how can i find a fraction of a number when the fraction is a unit fraction?
to find a unit fraction of a number, \\(\

$$\begin{cases} ? \\\\ \\text{multiply} \\\\ \\text{divide} \\end{cases}$$

\\) the number by the denominator of the unit fraction.

Explanation:

Step1: Recall unit fraction operation

A unit fraction has numerator 1. To find \(\frac{1}{n}\) of a number, we divide the number by \(n\) (since dividing by \(n\) is equivalent to multiplying by \(\frac{1}{n}\)).

Step2: Apply to the key idea

In the key idea, for a unit fraction \(\frac{1}{\text{denominator}}\) of a number, we perform the operation of dividing the number by the denominator. From the example, \(\frac{1}{4}\) of 20 is \(20\div4 = 5\), which uses division. So the correct operation is "divide".

Answer:

divide