Isbn: 9787538662986 - Happily Elementary School: Clever Operator Mouth Operator (1) (1 results)

paperback. Condition: New. Paperback Pages Number: 77 Language: Chinese. Calculation is the cornerstone of primary school and even high school mathematics learning. Logical thinking ability. and then a thorough understanding of the meaning of the questions. if the calculation is slow or miscalculation. will fall short. Happy in elementary school: A simple calculation of the port operator (1) I count workbooks really suitable for young convergence. The contents of the book is in line with the progress of the kindergarte.…