The position of the first unit in the catalogue of mathematics textbooks for the first grade of primary school published by People's Education Press: 1, position (1)2, position (2) In the second unit, the abdication is subtracted by 20: 1, minus 92 is a dozen, minus 83 is a dozen, minus 74 is a dozen, minus 6, 5, 4, 3. Graphic Assembly (2) Comprehension of Numbers within Unit 4 100: 1, Counting, Composition of Numbers 2, Reading and Writing Numbers 3, Order of Numbers, Size of Comparison Numbers 4, Integer Ten Plus One Number, Corresponding Subtraction Unit 5 Understanding RMB: 1, Understanding RMB 2, Simple Calculation Unit 6 650. Integer plus or minus integer 2, two digits plus one-digit integer 3, two digits minus one-digit integer 10 Unit 7 Cognitive time: 1, Cognitive time (1)2, Cognitive time (23, Unit 8: 1, Find the law (1)