The fuzziness of quantity refers to finding the value of a certain quantity through reasoning and calculation by giving some relations between quantities. Here are some tips for quantifying problems:

1, grasp the relationship before doing the questions: the most important thing for the number of questions is to find the relationship between the quantities. By listing given keywords or data in a table, or drawing a chart, you can usually help to master this relationship.

2. Analogical understanding: Some complex quantitative relationships can be understood by analogy. Usually, the quantitative relationship can be transformed into scenes in daily life such as material movement, shopping and distribution, thus simplifying the understanding difficulty.

3. Solving the Unknown Number by Column Equation: For the Mongolian problem with a single unknown number, the column equation method can be used to solve it. Generally, according to the relationship between known quantities, the quantity to be solved is expressed in the form of "unknown", and the equation is listed, and the value of the unknown can be obtained by solving the equation.

4. Approximate calculation: For the quantity problem requiring approximate values, appropriate approximate calculation methods can be adopted to obtain approximate results, such as rounding, unit conversion, median, etc.

5. Progressive recursion method: For the recursion method and the recursion relationship between some quantities, it can be solved by progressive recursion method. Usually, the solutions of small-scale problems can be listed first, and then the solutions of large-scale problems can be gradually deduced.

To sum up, to solve the problem of fuzzy quantity, we need to be good at discovering laws, mastering the relationship between quantities, and applying mathematical knowledge and skills in time. In addition, you need to practice more to enhance your ability to solve problems.