Tom has 5 boxes of crayons. Each box contains 6 crayons. How many crayons does he have altogether? If he uses 7 crayons, how many are left?

Sarah reads 4 books each month. If she continues this for 3 months, how many books will she read? If she donates 5 books, how many will she have left?

There are 6 tables in a classroom. Each table has 5 chairs. How many chairs are there in total? If 8 chairs are broken, how many chairs are usable?

A toy store has 7 shelves. Each shelf holds 9 toys. How many toys are there in total? If 12 toys are sold, how many toys remain?

A baker makes 4 trays of cookies. Each tray has 10 cookies. How many cookies does he make in total? If he gives away 15 cookies, how many does he have left?

Emma has 3 jars of marbles. Each jar contains 6 marbles. How many marbles does she have altogether? If she loses 4 marbles, how many does she have now?

A gardener plants 5 rows of flowers. Each row has 4 flowers. How many flowers are planted in total? If 6 flowers wilt, how many are still healthy?

A school has 8 classrooms. Each classroom has 7 desks. How many desks are there in total? If 10 desks are broken, how many desks are still usable?