Liam has 35 marbles. His friend gave him 20 more marbles. How many marbles does Liam have now?

Sara has 18 apples. She buys 15 more apples at the store. How many apples does Sara have in total?

Tom has 50 toy cars. He gives 12 toy cars to his friend. How many toy cars does Tom have left?

Jessica collected 27 seashells on Monday and 19 seashells on Tuesday. How many seashells did she collect in total?

David has 23 stickers. He wins 17 more stickers in a contest. How many stickers does David have now?

Mia read 12 pages of her book on Wednesday and 15 pages on Thursday. How many pages did she read in total?

Emily has 14 balloons. She buys 22 more balloons for a party. How many balloons does she have in total now?

Jack had 28 toy blocks. He built a tower using 14 blocks. How many toy blocks does he have left?

Sophia has 30 candies. She shares 8 candies with her friend. How many candies does Sophia have left?

Noah collected 47 rocks from the beach. Later, he found 13 more rocks in his backyard. How many rocks does he have in total?