There are 4 boxes of paper. Each box has 10 reams. The office uses 18 reams. How many are left?

Liam has 7 shelves. Each shelf holds 5 toy cars. He buys 10 more toy cars. How many toy cars does he have in total?

A student brought 3 packs of water bottles to school. Each pack contains 8 bottles. Then 5 bottles were used during recess. How many are left?

Lila has 4 boxes of markers. Each box holds 7 markers. She finds 9 more markers in her backpack. How many markers does she have in total?

A teacher bought 5 boxes of pencils. Each box has 6 pencils. Then she found 8 more pencils in her drawer. How many pencils does she have in total?

There are 9 shelves in a library. Each shelf has 6 books. Then, 12 more books are added. How many books are in the library now?

Noah has 2 boxes of crayons. Each box has 24 crayons. He lost 18 crayons. How many crayons does he have now?

There are 6 rows of chairs. Each row has 8 chairs. Then 10 more chairs were added at the back. How many chairs are there now?

A store has 4 shelves of toy robots. Each shelf holds 9 robots. Then the store sells 13 of them. How many robots are left?

A baker made 3 trays of cupcakes. Each tray has 12 cupcakes. She sold 18 cupcakes. How many cupcakes does she have now?

The cafeteria has 6 trays. Each tray holds 5 lunches. After lunch, 8 lunches are left uneaten. How many lunches were eaten?