Hundred tables generally appear in the textbooks of the first grade of primary school, and its value lies in letting students know more clearly the arrangement order of numbers within 100. The rule in the table is that each row and column has 10 numbers, *** 10 rows and 10 columns; The number on the right of two adjacent numbers in a row is greater than the number on the left1; The next number of two adjacent numbers in a column is greater than the previous number 10. On the one hand, it enables students to improve and consolidate the knowledge gained in digital recognition, on the other hand, it can cultivate students' observation and expression ability, promote the development of students' thinking and improve their interest in learning mathematics.