Fractions, Decimals and Percentages：練習問題

Convert the fraction \(\frac{3}{5}\) into a percentage.

A large pizza is cut into 12 equal slices. If Amy eats \(\frac{1}{4}\) of the pizza and Ben eats \(\frac{1}{3}\) of the pizza, how many slices are left?

A merchant bought 350 boxes of oranges, each containing 24 oranges. During transport, 5\% of the total oranges were crushed and could not be sold. How many oranges are available for sale?

A rectangular garden has a length of \(12.5\) meters and a width of \(4.8\) meters. What is its area in square meters?

A box contains 50 marbles. 12 marbles are red, 18 are blue, and the rest are green. What percentage of the marbles are green?

Express the result of \(3 \div 8\) as a decimal and a percentage.

A shopkeeper bought 400 eggs. 5% of them were broken. He sold the remaining eggs in packs of 6. How many full packs did he sell?

Mr. Lee had a length of rope. He used 20% of it to tie a parcel and \(\frac{5}{8}\) of the remaining rope to hang a swing. If there are 6 meters of rope left, what was the original length of the rope in meters?

A school holds a survey about favorite fruits among 200 students.
Apples: 35%
Oranges: \( \frac{1}{4} \)
Grapes: 40 students
Bananas: The rest
(a) How many students chose Apples?
(b) How many students chose Oranges?
(c) What percentage of students chose Bananas?

A school's sports equipment room has 4,200 items. Fractions of the items are listed below:
(a) \(\frac{3}{7}\) of the items are balls. How many balls are there in total?
(b) If \(\frac{2}{5}\) of the remaining items are skipping ropes, how many skipping ropes are there?
(c) What percentage of the original total items are skipping ropes?