53 days of practice: You can buy 53 days of practice for the fifth grade math exercises in Beichen District, Tianjin. The exercises in this book are not very difficult. Mathematics will be practiced with the textbook lesson by lesson, and each unit will have exercises. At the end of each class, there will be a slightly difficult math thinking question, which is very suitable for fifth-grade children.

"Experimental class": You can buy the "experimental class" of the fifth grade math exercises in Beichen District, Tianjin. In addition to the basic questions, this book will also have some expanded and perfect contents, which can exercise students' thinking ability, and the number of questions is moderate, which is very suitable for fifth-grade students.