Fifth Grade Math Book - Below are links to the math book volume 1 and 2.
https://www-k6.thinkcentral.com/content/hsp/common/Go_Math_National_2016_StA/Gr5_National_Go_Math_2016_Student_Edition_Volume_1.pdf
https://www-k6.thinkcentral.com/content/hsp/common/Go_Math_National_2016_StA/Gr5_National_Go_Math_2016_Student_Edition_Volume_2.pdf
Helpful websites:
http://worksheets.theteacherscorner.net/make-your-own/math-worksheets/
http://www.funbrain.com/math/index.html