Sometimes keywords such as "greater than" and "less than" will appear in the known conditions, and it is necessary to analyze the meaning of the problem. If the number in the comparison relationship is large, it will be supplemented; On the other hand, if you find a smaller number, you can use subtraction. For example, in the following two examples, the conditional expression is "greater than …", but the calculation method used is different.

Example 2: On Sunday, Zhang Peng wrote 80 crossings, 27 more than Li Ming. How much did Li Ming write?

Analyzing the meaning of the question, I wrote a lot, and asked that the number written by Li Ming was not a decimal, so I used the subtraction: 80-27=53 (Tao).

Example 3: In the handicraft class, Xiao Li folded 48 paper cranes, Xiao Qiang folded 9 more than Xiao Li, and how many did Xiao Qiang fold?

Analyzing the meaning of the question, Xiao Qiang folded more paper cranes, and he was a big number in the comparative relationship, so he added: 48+9=57 (only).