The problem of dividing cakes in the fifth grade mathematics of Beijing Normal University is a classic mathematical problem, which mainly involves the conversion of fractions and decimals. In this problem, eight cakes need to be distributed to three people, and the number of cakes each person gets should be an integer.

First of all, we can try to use scores to express the number of cakes that everyone should get. Since 8 is not divisible by 3, the number of cakes each person gets cannot be expressed as an integer. However, we can use scores to express the number of cakes that everyone gets. In this case, the number of cakes each person gets can be represented by two and a half cakes, that is, two 1/2 cakes.

Next, we need to convert this fraction into a decimal. According to mathematical knowledge, we know that 1/2 is equal to 0.5. So 2 1/2 can be written as 2+0.5=2.5. So, everyone should get 2.5 cakes.

Finally, we need to consider how to convert this decimal into an integer. In this problem, we can convert 2.5 into an integer by rounding. Since 2.5 is less than 3, we can cut off the decimal part of 2.5 and keep only the integer part of 2. Therefore, everyone should get two cakes.

In addition, this problem also involves the concepts of rounding and rounding. In real life, rounding and rounding are very common mathematical operations. By studying this problem, we can better understand the concepts of rounding and rounding, and how to apply them to real life.

To sum up, the answer to the problem of dividing cakes in the first volume of fifth grade mathematics in Beijing Normal University is that everyone should take two cakes. The process of solving this problem involves the conversion of fractions and decimals and the method of rounding. Through the study of this problem, we can better understand the relationship between fractions and decimals, and how to convert and approximate them.