1, mainly learning multiplication and division in tables, reading and writing numbers within 10,000, and adding and subtracting numbers within 10,000 (without carry and abdication) include the two-step calculation of addition, subtraction, multiplication and division and the understanding of brackets, that is, the elementary arithmetic law of simple two-step calculation.

2. Simple application problems of two-step calculation, others include statistics and preliminary understanding. You can use a square to represent five or 10. The simple understanding of graphics and the simple understanding of measurement units such as meters and centimeters of length, kilograms and grams of weight is relatively simple.

3. Pay attention to the memory and application of multiplication formula, and do simple multiplication and division in the table, two-step operation algorithm and the application of simple two-step operation.