There are 100 handkerchiefs, one handkerchief is sandwiched between every two clips, and one * * * needs 10 1 clip.

The specific answer is as follows:

According to the meaning of the question:

Clip+handkerchief+clip+handkerchief+clip+...+clip

Column formula:

100+ 1= 10 1

So a * * * needs 10 1 clips.

Addition attribute:

From additive commutative law's associative law, it can be concluded that when several addends are added, the positions of addends can be exchanged at will; Or add a few addends first and then add them with other addends, and the sum remains the same.

In addition, for example, * * * has a combination of three apples and two apples, and * * * counts as five apples. This observation is equivalent to the mathematical expression "3+2 = 5", that is, "3 plus 2 equals 5".