If you have 5 boxes with 8 apples in each and then eat 7 apples, how many apples do you have left?

Sarah has 45 candies. She gives 18 candies to her friends and then buys 27 more candies. How many candies does she have now?

Emily reads 15 books in June and 18 books in July. If she decides to donate 12 books, how many does she have left?

Mark had 120 marbles. He gave 45 to his friend and won 30 more in a game. How many marbles does he have now?

Lisa has 3 packs of pencils with 12 pencils in each pack. She gave away 10 pencils. How many pencils does she have left?

Tom bakes 24 cookies and divides them equally into 4 boxes. He then eats 3 cookies. How many cookies are left?

Jenny has 60 stickers. She gives 15 stickers to her brother and buys 25 more stickers. How many stickers does she have now?

In a basket, there are 48 oranges. If Alex eats 9 and his mom buys 13 more, how many oranges are there in the basket now?

Mike had 80 baseball cards. He gave 28 cards to his friend and received 15 more from his brother. How many baseball cards does Mike have now?