Solution 2: Seek more peaches than apples; 5-2=3 (pieces).

analyse

This topic investigates the application of integer addition and subtraction in 10. By giving basic condition information and combining the calculation rules of integer addition and subtraction, two different problems are put forward and accurate calculation formulas are listed.

Hand index formula within 10:

The index finger extends "1" and the middle finger extends "2".

The ring finger is "3" and the little finger is "4".

Hold your thumb with four fingers and remember that the thumb is "5".

Then extend the index finger to the little finger, and "6", "7", "8" and "9" are arranged in numbers.

A clever way to apply problems:

First, the application problem needs to transform the text description in the topic into a mathematical formula.

Second, in the face of a lot of text information in the topic, children often can't grasp where the key information is.

Third, children just started to contact with application problems, did not develop the good habit of doing problems, did not pay attention to what the questions asked, and began to do it, often in the opposite direction.

Fourth, children don't pay attention to writing habits, don't bring units, don't answer, don't check, and often lose points in exams.