2. Solve the equation according to the relationship of each part in subtraction.

In subtraction, being slowed down = difference+subtraction.

3. Solve the equation according to the relationship of each part in multiplication.

In multiplication, one factor = product/another factor.

For example, list equations and find their solutions.

4. Solve the equation according to the relationship of each part in division.

After solving the equation, it is necessary to verify whether the obtained solution is effective by testing. This requires first substituting the unknown value into the original equation to see if the number on the left and the number on the right of the equation are equal. If the numbers are equal, the value is the solution of the original equation; If the numbers are not equal, it is not the solution of the original equation.

The above methods are commonly used in primary school mathematics. I hope students can practice more and master it skillfully.

Shoushan

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