2. List the mathematical expressions according to the chart. For example, if the chart is the sum of several numbers, then the mathematical formula is the sum of several addends; If the diagram is to find the difference between several numbers, then the mathematical formula is the minuend MINUS the minuend; If the graph is the product of several numbers, then the mathematical formula is the product of several multipliers; And so on.
3. Write the reading method of the formula under the listed mathematical formula. If the mathematical formula is the sum of several addends, it is read as "how many addends are equal"; If the mathematical formula is the difference of several subtractions, it is read as "how much is subtracted"; If the mathematical formula is the product of several multipliers, it is read as "several times several equals several"; And so on.