Life is full of mathematical knowledge, which is not only interesting, but also plays an important role in our life. If we leave these seemingly simple numbers, our life will not be as normal as usual. This shows the importance of mathematics in our life.

For example, bank deposits are divided into lump-sum deposits, time deposits, demand deposits and government bonds, and interest rates are also large and small. Usually we calculate the interest rate as follows: principal × interest rate × time = earned interest, and then deduct 20% from the interest to pay taxes (except national debt), and the remaining 80% interest is the interest you deserve.

In addition, all kinds of things invented by scientists and weather conditions measured by meteorologists have to go through all kinds of serious thinking and precise calculation to get the correct answer. Even if you accidentally write the wrong decimal point, all your efforts will be in vain.

And astronauts who often fly in the sky. They must operate hundreds of meters composed of numbers. If they are not careful, the result will be a plane crash. It can be seen that mathematics is indispensable in our life, and we can't be careless, otherwise it will cause serious consequences.

Mathematics not only has these values, but also can be seen and used everywhere in our lives. For example, farmers use geometric figures to make farms more beautiful and better managed; Engineers use scales to let people know this thing better; The four calculation methods used by businessmen and farmers are to calculate the value of goods more simply and accurately; Various statistical tables are made for better statistical data.

Let people know at a glance; The use of percentage is to better calculate the discount price of goods; These methods are used to calculate the surface area, so as to make qualified goods with the least materials; Calculate the volume or volume, and use the tail removal method to ensure that the goods are stored without overflowing; The conversion of similar units is for the convenience of our calculation.