With the advancement of online class hours, more than half of the learning tasks have been completed now, and the division part of the second book of mathematics compiled by the Ministry is a transitional knowledge content. The mastery of this part is directly related to the learning of mathematics knowledge during the later study period, and its importance is self-evident. The following little teacher combed and summarized this part of knowledge. Friends who need it can leave messages "knowledge points" and "exercises" in the comment area to obtain electronic files.

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Division knowledge points in the second volume of the second grade review table.

1, the meaning of average score: everyone gets the same amount, that is, each share gets the same amount, which is called average score.

2. Two meanings of division:

Divide a number (something) into several parts on average and find out how much each part is; Calculated by division, total number of copies = number of copies.

average score

Divide a quantity into several parts and try to divide it evenly; Calculated by division, total ÷ each copy = number of copies.

3. How to read the division formula: read it from left to right, ⊙ read it as division, ⊙ read it as arithmetic, and the other numbers remain unchanged.

24÷4=6 Pronunciation: 24 divided by 4 equals 6.

4. Name of each part of the division formula: dividend ÷ divisor = quotient. Dividend quotient = divisor,

5. Find the quotient by multiplication formula, and think: divisor × quotient = dividend.

6. "Find how many times one number (large number) is another number (decimal number)", that is, "How many other numbers (decimal numbers) a number (large number) has are all calculated by division, and" One number (large number) ÷ another number (decimal number) = multiple ".

Average score of study

7. When solving problems by multiplication and division, the problem is the total number, and multiplication is used; The question is the number of copies or each copy, calculated by division.

8. When you need to ask and solve problems, you can ask:

(1) addition problem: Sum, "Who and who are * * *?" .

② The problem of subtraction: comparison. "Who is more than who? ; "Who is less than who?" .

③ Division: If there is a multiple relationship, you can ask the question "Who is a multiple to whom?" Write a big number before the word "yes" and a small number after the word "yes".

9. The price of an item is called the unit price, how many pieces are bought is called the quantity, and the money needed to buy a few pieces is called the total price.

Unit price × quantity = total price. Total price/unit price = quantity. Total price ÷ quantity = unit price.

10, meaning of the formula: 45÷9=5, which means that (45) is divided into (9) parts, and each part is (5).

Average score of study

The exercises (part) in the second volume of the second grade mathematics are compiled by the Ministry, and the complete content is collected by leaving a message. Tip: Pay attention to exercises, learn to read more questions, and use the above knowledge points to "divide a number (thing) into several parts on average and find out how much each part is;" Divide a quantity into several parts and try to divide it evenly.

1. There are 30 notebooks, and every 6 notebooks are put in a box. How many boxes do you need?

2. Distribute 15 carrots to 5 rabbits on average. How many are there in each rabbit?

3. Zhang Ling got 16 red flowers and Li Fang got 8 red flowers. How many times more red flowers are there in Zhang Ling than in Sally?

4. Four groups of students go to plant trees. There are six people in each group. How many people are there in a * * *?

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There are 4 boxes of rubber balls in the shop, 6 in each box. 18 sold, how much is left?

6. Xiaohong made a 16 crossing calculation in 4 days. According to this calculation, how many days will it take to complete the remaining 20 questions?

7. Xiao Ning brought 100 yuan to buy stationery, and wanted to buy a schoolbag and a pencil case. Did he bring enough money?

8. A car can seat four people, and the number of people sitting in a van is three times that of a car. How many people can a car and a truck carry?

9. A rope is15m. Cut into 3-meter ropes. What length can you cut at most? How many times do you need to cut it? If it takes 2 minutes to cut once, how many minutes does it take?

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This article was originally written by Little Education. Welcome to pay attention and bring you more knowledge.

I hope the above sharing is useful to everyone. Bruner said that exploration is the lifeline of mathematics. Without exploration, there will be no development of mathematics. It is because of unremitting exploration that boring learning becomes happy.