analyse

The listed addition formula: 8+8+8=24 (pieces)

The listed multiplication formulas are: 8×3=24 (pieces) or 3×8=24 (pieces).

Then a * * * has 24 triangles.

This topic examines the application of multiplication formula. According to the data, the total number of triangles is regarded as three lines, and each line has eight triangles. Combine the formula "3824" and answer according to this formula.

Pay attention to math problems:

1, carefully examine the questions. When doing a problem, the taboo is not to look at the problem carefully and not to work hard. As a result, not only a lot of time is wasted, but sometimes wrong choices are made, resulting in half the effort.

Therefore, we must read through the questions and quickly think of concepts, formulas, theorems and problems that should be paid attention to in knowledge points. To explore the implied conditions in the topic, we should discard the false and retain the true, and understand the true meaning of the topic. ?

2. Pay attention to solving problems. In addition to solving problems directly according to ideas, we should also pay attention to some special methods, such as special value method, substitution method, exclusion method, verification method, combination of numbers and shapes and so on.