The last set of worksheets deals with commonly encountered fractions, including percentage values. These are values that students should be able to site reduce when they encounter them. Mastering these reducing problems will make many other fraction problems go much faster.
Get some addition practice while reading picture books together. There are a ton of great picture books that have overt and hidden addition facts and practice, but you can turn any book into a lesson in addition. If you read a page with a picture of a forest, you might say to your child, "I see three trees and four flowers. How many plants are there all together?" You can add characters, shapes, items, or anything in multiples.