What is the result of 14 + 7?

John had 20 marbles and he lost 6 of them. How many marbles does John have now?

If a rectangle has a length of 8 units and a width of 3 units, what is its perimeter?

Tom has 18 pencils and he shares them equally among his 6 friends. How many pencils does each friend receive?

A bakery sold 24 cupcakes in the morning and 32 cupcakes in the afternoon. How many cupcakes did the bakery sell in total?

A farmer has 40 chickens. If he sells 15 of them, how many chickens does he have left?

There are 26 students in a classroom. If 8 students are absent, how many students are present in the classroom?

A store sells 24 books in the morning and 18 books in the afternoon. How many books did the store sell in total?

If a box has 5 red marbles, 3 blue marbles, and 2 green marbles, how many marbles are there in total?