Complete collection of pictures of second grade mathematics manuscripts

Mathematics is a variety of proof techniques. Will second-grade students do math manuscripts? Below are the pictures and information of the second grade mathematics handwritten report that I brought to you. I hope you like it. Appreciate the pictures in the second grade mathematics handwritten newspaper. Picture 1 in the second grade mathematics handwritten newspaper. Picture 2 in the second grade mathematics handwritten newspaper.

Picture 3 in the second grade mathematics handwritten newspaper. Picture 4 in the second grade mathematics handwritten newspaper. Handwritten newspaper picture 5

Second grade mathematics handwritten newspaper picture 6 Second grade mathematics handwritten newspaper information: The prince divides the cake

In ancient times, a prince went to the mountain to visit Wu Xiu When the brothers saw their father coming, they immediately gathered around him. The prince said, "Children, my father brought you your favorite cake today." He took out a large cake and divided it into two equal portions. , and gave a piece to the eldest son. The slanderous second child said: "Father, I want to eat two pieces of cake." So the prince divided the second piece of cake into four equal parts and gave two pieces to the second child. The greedy third child He said, "Father, give me three pieces of cake." The prince divided the third cake into six equal parts and gave him three pieces. The eldest brother, who was always honest, said, "Father, the fourth is the youngest, so I should give it to him." Six yuan." The fourth child was very happy after hearing this. He felt that his father had given him the most. Students, who do you think has the most? Contents of the second-grade mathematics handwritten report: Uniform tower matching

Can you put nine The numbers 1, 2, 3, 4, 5, 6, 7, 8, and 9 are divided into three groups, each group has three numbers, and the sum of each group is equal? ??

Divide them into three groups, Make the sum of each group equal, then the sum of each group should be 45÷3=15.

Because each group must have three numbers, and the sum of the three numbers is 15, the three numbers 7, 8, and 9 must be in three different groups.

Containing a group of 9, the sum of the other two numbers is 6, so it can only be 2, 4 or 1, 5.

If 9, 2, and 4 are in a group, then the sum of the other two numbers in the group containing 8 is 7. Only 1 and 6 can be arranged, and the remaining 7, 5, and 3 are in the third group. Group.

If 9, 1, and 5 are in a group, then only 3 and 4 can be arranged in the group containing 8, and the remaining 7, 6, and 2 are in the third group.

There are two solutions to this question:

9 4 2=8 6 1=7 5 3,

9 5 1=8 4 3= 7 6 2.

It is easy to make each group contain three numbers. The key is to make the sums of each group equal. What should be the sum of each group of three numbers?

First calculate the sum of nine numbers: 1 2 3 ... 9 = 45.