Find the change in a story

Some more arrive or leave. Find how many.

1. Kai has 9 shells. Kai gets some more. Now Kai has 10. How many did Kai get?
2. Hana has 1 shells. Hana gets some more. Now Hana has 10. How many did Hana get?
3. Lia has 3 stickers. Lia gets some more. Now Lia has 7. How many did Lia get?
4. Chen has 3 buttons. Chen gets some more. Now Chen has 6. How many did Chen get?
5. Mo has 3 stickers. Mo gets some more. Now Mo has 12. How many did Mo get?
6. Eli has 3 stickers. Eli gets some more. Now Eli has 7. How many did Eli get?
7. Nia has 6 crayons. Nia gets some more. Now Nia has 20. How many did Nia get?
8. Omar has 17 blocks. Omar gets some more. Now Omar has 20. How many did Omar get?
9. Kai has 9 shells. Kai gives some away. Now Kai has 4 left. How many did Kai give away?
10. Chen has 9 pencils. Chen gives some away. Now Chen has 5 left. How many did Chen give away?
11. Ivy has 6 stamps. Ivy gives some away. Now Ivy has 4 left. How many did Ivy give away?
12. Mo has 9 marbles. Mo gives some away. Now Mo has 4 left. How many did Mo give away?
13. Ana has 5 marbles. Ana gives some away. Now Ana has 3 left. How many did Ana give away?
14. Ben has 6 buttons. Ben gives some away. Now Ben has 4 left. How many did Ben give away?
15. Ivy has 6 marbles. Ivy gives some away. Now Ivy has 2 left. How many did Ivy give away?
16. Fay has 15 pencils. Fay gives some away. Now Fay has 6 left. How many did Fay give away?
17. Omar has 8 shells. Omar gets some more. Now Omar has 14. How many did Omar get?
18. Nia has 12 stamps. Nia gets some more. Now Nia has 20. How many did Nia get?
19. Hana has 10 stamps. Hana gets some more. Now Hana has 20. How many did Hana get?
20. Eli has 11 stickers. Eli gets some more. Now Eli has 19. How many did Eli get?