5th Grade Math: Solving Missing Variables with Operations

Ava has 24 apples. She gives some to her friend. If she has 15 apples left, how many apples did she give away?

Liam bought 5 packs of stickers. Each pack has the same number of stickers. If he has 35 stickers in total, how many stickers are in each pack?

A school has 120 students. If 30 students are in the art club, how many students are not in the art club?

Emma read 45 pages of her book. If she wants to read a total of 100 pages, how many more pages does she need to read?

Noah has a collection of 80 baseball cards. He gives away some cards to his cousin. If he has 52 cards left, how many cards did he give away?

Sophia has 60 marbles. She buys some more marbles and now has 85 marbles. How many marbles did she buy?

A farmer has 150 chickens. If he sells some and has 90 chickens left, how many chickens did he sell?

Mason has 3 times as many toy cars as his brother. If his brother has 12 toy cars, how many toy cars does Mason have?

A bakery made 200 cookies. If they sold 75 cookies, how many cookies are left?

Isabella has 50 stickers. She wants to share them equally among her 5 friends. How many stickers will each friend get?