(1) On the number line, mark the fractions: \( \frac{5}{4} , \frac{2}{4}, \frac{4}{4} \)

(2) On the number line, write the missing amounts in the boxes.

(3) On the number line between 0 and 1, divide the length into exactly 8 equal parts.

(4) In each box, write the correct decimal number on each number line.