I learned the decimal point in the fourth grade next semester. I also know that when measuring and calculating, it is often impossible to get accurate integer results, so it is often expressed by decimal points.

Decimal means to divide a whole into several parts on average, such as 100, 1000, etc. 1 Part or parts are one tenth, percentage, one thousandth, etc. Fractions like this can be expressed in decimals.

The other night, I had a dream about decimal point. In a vast forest, the horn sounded suddenly. It turns out that the animal sports meeting officially opened today. There are several events in the sports meeting. Among them, the most striking events are running, swimming and high jump.

After fierce competition, the final result has been "released". As a result of the running competition, the pony ran 406.38+0 meters in one minute. This lamb ran 376.28 meters in one minute. The snail ran 129.726 meters in one minute. As a result of the swimming competition, Xiaoyu swam 197.63 meters in one minute. The tortoise swam 184.52 meters in one minute. Tadpoles swim for one minute 152+0 meters.

When preparing to announce the result of the game, the fox said to the referee, "Look, referee, this decimal point is as big as sesame." Simply put, don't use decimal points. "She said, while wiping off the decimal point. As a result, the scores of each item have changed. The worst became the best.

For example, the pony's running performance has become 4063 1 meter. The running performance of the lamb became 37,628 meters. The snail has become 129726 meters. When everyone heard the result, they couldn't help asking: How did snails become running champions? Isn't he usually slow? When I got up the next morning, I understood that if the decimal point is wrong, it will cause great mistakes.

The importance of learn mathematics:

1. Mathematics is closely related to our life. To say that the real effect of learning mathematics is not reflected in exam-oriented education, but in my own thinking about the future.

2. The importance of mathematics is self-evident. Mathematics is the foundation of all sciences and an important channel to cultivate logical thinking. It can be said that every major progress of our mankind is strongly supported by mathematics.

3. The application of mathematical knowledge in life is everywhere. From the calculation of daily living costs, to astronomy, geography, quality control, agricultural economy, aerospace, there are shadows of using mathematics.