Write and evaluate expressions for real-world situations with a letter

Write an equation with a letter for the unknown number in the story. Then solve it to find the number.

1. Mei had 9 seeds. Then Mei collected 1 more. How many seeds does Mei have now?
2. Nadia had 5 hockey cards. Then Nadia got 13 more. How many hockey cards does Nadia have now?
3. Fatima had 2 hockey cards. Then Fatima got 13 more. How many hockey cards does Fatima have now?
4. Aisha had 3 apples. Then Aisha picked 15 more. How many apples does Aisha have now?
5. Rohan had 17 stickers and gave away 9. How many stickers are left?
6. Ethan had 25 pine cones. Then Ethan collected 21 more. How many pine cones does Ethan have now?
7. Sofia had 20 hockey cards and traded away 8. How many hockey cards are left?
8. Rohan had 41 photos and deleted 36. How many photos are left?
9. Mateo had 19 beads. Then Mateo bought 57 more. How many beads does Mateo have now?
10. Hana had 59 marbles and lost 23. How many marbles are left?
11. Elif had 62 stickers and gave away 27. How many stickers are left?
12. Nadia had 25 pine cones. Then Nadia collected 24 more. How many pine cones does Nadia have now?
13. Lucas had 115 marbles. Then Lucas won 807 more. How many marbles does Lucas have now?
14. Theo had 544 beads. Then Theo bought 116 more. How many beads does Theo have now?
15. Ava had 504 stickers and gave away 306. How many stickers are left?
16. The class wants to raise $910 for the winter carnival. So far it has raised $376. How much more does it need?
17. The school wants to collect 956 cans of food for the food bank. So far it has 576. How many more cans does it need?
18. Noah had 592 beads and used 287 on a bracelet. How many beads are left?
19. Liam had 458 pine cones and used 436 for a craft. How many pine cones are left?
20. The class wants to raise $644 for the charity fun run. So far it has raised $569. How much more does it need?