There is too much money in the book, and only one person is wrong. Obviously, a sum of money was wrongly written as 10 times of it.

In the fourth grade of primary school, there is no complicated operation involved, so the trial calculation begins with the wrong writing of 10 times the amount of money.

A sum of money, written as its 10 times, will be 9 times more than this money.

Nine times is 95.4 yuan, 1 time is 95.4÷9= 10.6.

That is, the money with the wrong decimal point is 10.6 yuan. He mistyped the decimal point as 106, which was 95.4 more.

If you learn the equation, you can formulate it directly.