2 step problems (+,-,x)

Noah has 50 sheets of colored paper. He used 12 sheets for an art project and plans to use 15 more. How many sheets will he have left?

Zoe rode her bike for 15 miles on Saturday and 9 miles on Sunday. She then walked 4 miles. What is the total distance she traveled?

Ava baked 24 cookies. She gave 5 cookies to her neighbor and 3 to each of her 4 friends. How many cookies does she have left?

Maria planted 15 flowers in her garden. Later, she planted 7 more flowers and gave away 4 to her neighbor. How many flowers does she have left?

Liam ordered 3 pizzas, each cut into 8 slices. He ate 5 slices and shared 7 slices with his friends. How many slices does he have left?

Chloe bought 4 concert tickets, each costing $15. She returned 1 ticket. How much money did she spend?

A class of 30 students went on a field trip. If each student brings 2 snacks and the teacher brings 6 extra snacks, how many snacks are there in total?

Lucas scored 120 points in the first level of his video game. He scored 50 points less in the second level. What is his total score after these two levels?

Jake invited 5 friends to his birthday party. Each friend brings 2 balloons, and Jake had 10 balloons himself. How many balloons are there in total?

Emma bought 8 apples and 5 oranges. She gave 3 apples to her friend. How many pieces of fruit does she have now?

Oliver has 10 pencils. He buys 6 more packs of pencils, with each pack containing 3 pencils. How many pencils does he have in total?

Sarah borrowed 12 books from the library. She returned 4 books and then borrowed 3 more. How many books does she have now?