The maximum product of a three digit number multiplied by a two digit number is a five digit number

Three-digit digits The product of two digits is up to five digits, which is correct.

8. To develop good calculations, calculation habits, improve the ability to calculate learning mathematics is inseparable from the operation, junior high school teachers often step by step on the blackboard to perform calculations, due to limited time, the amount of calculations, high school teachers often leave the calculation to students, which requires students to use their brains more, diligent hands, not only can be written, but also oral arithmetic and mental arithmetic, for complex operations, to be patient, master arithmetic, pay attention to simple methods. 9. Develop good problem-solving habits and improve your thinking ability.

Mathematics is the gymnastics of thinking, and it is a subject with strong logic and rigorous thinking. Training and standardizing problem-solving habits is an effective way to improve the use of words, symbols and graphics, which are the basis for developing thinking ability. Therefore, it is necessary to gradually consolidate the foundation and improve one's thinking ability.

10. Develop the habit of reflection after solving the problem and improve the ability to analyze the problem After solving the problem, it is necessary to develop the opportunity to review the following questions: How to analyze the association and explore the way to solve the problem in the process of solving the problem? What is the key to getting the problem solved?

What difficulties did you encounter in the process of solving the problem? How did you overcome it? In this way, through the review and reflection after solving the problem, it is conducive to discovering the key to solving the problem, and extracting mathematical ideas and methods from it.

Therefore, after solving the problem, we should often summarize the rules of the problem and the solution, and only by reflecting diligently can we "stand on the mountain, see far, and control the overall situation", and improve our ability to analyze the problem.

Such a judgment can be verified with an example.

The largest three-digit number: 999, and the largest two-digit number: 99

999x99=98901……Five digits.

The above judgment is correct.

The largest three-digit number multiplied by two-digit number should be 999 99, you can do the math!

According to the title, suppose the three-digit number is 100; The largest two-digit number is 99,100 99=9900, and 9900 is the number of match-four code digits;

Therefore, the product of the three-digit multiplication bridge by the largest two-digit number is not necessarily a five-digit number, and the original title is wrong;

So the answer is:

According to the title, suppose the three-digit number is 100; The largest two-digit number is 99;

9900 is a four-digit number;

The return grinding and swimming, three digits multiplied by the largest two digits, the product is not necessarily five digits So the answer is:

Suppose a three-digit number is 999, and a two-digit number is 99, or a three-digit number is 100, and a two-digit number is 10;

98901 is a five-digit number and 1000 is a four-digit number;

Therefore, the product of two digits by three digits may be the number of four digits or five digits, and the statement is correct Therefore, the answer is:

Because 98901 is a five-digit number, so three digits multiplied by two digits, and the product is the most Hu Sheng is a five-digit trouser model, and the old saying that the code is correct to know the law

So the answer is:

Therefore, the number of digits multiplied by two digits is at least 4 digits

So a three-digit multiplied by a two-digit number is a maximum of 5 digits

The product of three digits multiplied by two digits is a maximum of 5 digits, and the minimum is 4 digits Jing Yan's statement is correct Bad manuscript sedan chair.

So the answer is:

Suppose the three-digit number is 100, and the two-acre missing state digit is 10, or the three-digit number is 999, and the two-digit number is 99;

100 10 = 1000, 1000 is a four-digit number;

999 99 = 98901, 98901 is a five-digit number;

Therefore, the product of three digits is multiplied by two digits, and the product is as small as four digits and as large as five digits, so the answer is searched:

Suppose a three-digit number is 999, a two-digit number is 99, or a three-digit number is 100, and the two-digit number is 10;

98901 is a five-digit number and 1000 is a four-digit number;

Therefore, the product of two digits by three digits may be four digits or five digits, and the statement is correct Therefore, the answer to the case is: