The difficulty is moderate. The difficulty of the second volume of fifth-grade mathematics published by People's Education Press is relatively moderate, which requires students to master more mathematical knowledge and skills, but the difficulty is not too complicated and difficult. The main contents of the second volume of mathematics are the understanding and calculation of fractions, decimals and figures, the calculation of area and perimeter, the understanding of cuboids, the understanding of angles, unit conversion and so on. If students can listen carefully, think carefully and practice patiently, they can easily master these knowledge and skills.