Math essay exercises for the fourth grade. Based on the learning content of Grade 4A, the extracurricular exercises of fourth-grade mathematics in Wenzhou, Zhejiang Province systematically sorted out the learning content of mathematics such as geometry, algebra, proportion and probability, numerical value and quantity. It is better to buy this book, which can be bought in bookstores or shopping platforms. Wenzhou, referred to as "Ou" for short, is a prefecture-level city under the jurisdiction of Zhejiang Province. Located in the southeast of Zhejiang Province, it borders the East China Sea in the east, Fujian Province in the south, Lishui City in the west and northwest, and Taizhou City in the north and northeast.