It is not easy to get a score of 100 in math test. If you don't have a good math foundation in this elementary school 1 to grade 4, it's hard to get a score of 100 in the grade 4 exam, because the grade 4 has learned four operations of math and application problems, and now the primary school math test questions are more and more difficult, so it's very difficult to get a score of 100 in the examination room if you just look at the questions on the teacher's paper. Your reaction ability needs to be accumulated and improved, so be sure to refuel! .