Use Khan Academy’s Get Ready Courses:
Use the link below to get ready for 6th grade. These activities can be accessed anytime during the summer. Videos, activities, and short assessments will guide you through all of the practice areas you may need.
Get ready for 6th:
https://www.khanacademy.org/math/get-ready-for-6th-grade
Get Ready for 7th:
https://www.khanacademy.org/math/get-ready-for-7th-grade
Get Ready for 8th:
https://www.khanacademy.org/math/get-ready-for-8th-grade