Grade two: preliminary understanding of length units and angles, understanding of table multiplication, objects and numbers within 10,000, table division, addition and subtraction within 10,000 grams and kilograms.
Grade three: measurement, quadrilateral, hours and minutes, division with remainder, multiple digits multiplied by digits, possibility, preliminary understanding of fractions, position and direction, division of digits, multiplication of two digits, preliminary understanding of decimals, area, year, month and day.
Grade four: understanding of large numbers, measurement of angles, trapezoid of parallelogram, division of three digits by two digits, division of two digits by divisor, four operations, operation rules and simple operations, nature of decimal meaning, addition and subtraction of triangles and decimals.
Grade five: decimal multiplication, decimal division, simple equation, observation object, polygon area, statistics and possibility, factor and multiple, cuboid and cube, meaning and nature of fraction, addition and subtraction of fraction, and transformation of graph.