Moderate. According to relevant information, Jiangsu Education Edition "I Love Learning Mathematics" is a set of primary school mathematics textbooks published by Jiangsu Education Publishing House, and the supporting papers are moderately difficult, which is consistent with the contents of the textbooks. The design of test paper is closely combined with the content of teaching materials, and the types and difficulties of questions are similar to the training questions and comprehensive questions in teaching materials, which can consolidate and enhance students' mathematical ability. At the same time, the test paper also incorporates some expanding thinking questions to help students cultivate their mathematical thinking and innovation ability. Generally speaking, the difficulty of the supporting test paper of "I love learning mathematics" published by Jiangsu Education Edition is the same as that of the textbook, which can effectively test and practice students.