1. Little jokes about fifth grade mathematics

Little jokes about fifth grade mathematics 1. Little jokes about fifth grade mathematics

There are many, here are a few excerpts You, see if that works 1. The arithmetic teacher said: "There are 10 pears here, 6 have been eaten, how many are left?" A gluttonous student replied: "I think we should eat the rest too. ."

2. Zai Zai came back from school happily and asked his mother: "Where is dad?" Mom saw Zai Zai's excitement and asked strangely: "Dad is at home, what are you doing with dad?" "I asked Dad for 5 cents." "Why?" Mom asked.

"Before I took the math test, my father said to me, 'If I get 100 points, give me 1 yuan, and if I get 80 points, I will get 8 cents.' Today, I got 45 points in the math test.

" Zaizai replied. Mom asked in surprise: "What! You only scored 45 points in the math test?" Zaizai said proudly: "Yes, math has to be rounded up, so dad has to pay 50 cents."

3 , a fashionably dressed girl walked into the post office remittance office, filled out the remittance form and handed it to the salesperson. The salesperson took a look at it, returned the order and said, "The numbers must be in capital letters."

The girl tilted her head and said, "In capital letters? The grid is so small, how can I write it in big letters?" 4. "Dad, No. 4 The car is here! "Fool, that's not No. 4, it's No. 31!" "The teacher said, 3+1=4!" the little boy said confidently. I hope it can help you, I wish you progress in your studies, and you can travel happily and grow up in the world of mathematics.

Mathematical knowledge for grade 2.5

A math joke 1. Once, my mother patiently inspired Yaya to do arithmetic problems: "Yaya, you have learned to do subtraction. Right? Come on, let's see, what's 4 minus 2?" "That's right, dear kid." "5 minus 5? 5, minus 5." Yaya mumbled, "I can't, mom."

"Child, you can't do it! Think about it, for example, your pocket!" There were 5 coins in it, but suddenly, all 5 coins were dropped. What else was in my pocket?" Yaya flashed her big eyes and said, "Well, what's left in my pocket? There is a hole!” 2. “I always get 100 in the arithmetic test.”

“That’s because you study well.” “But I never listen in class.”

That’s because you’re smart and you know how to study when you get home from school.” “A bit smart? But after school, I’m a person who deals with football.”

“Then you must rely on it during the exam. "Cheating." "You can't say that. I didn't write a note or peek at someone else's book. How can it be considered cheating?" "Then what did you do?" "I kicked the front." Nerd Jim's chair." "No, no, how could he be so naughty?" "I kicked him the first time, and he stretched out five fingers with his hand." "What is this? What do you mean?" "The answer to the first question is 2+3."

"Oh... what if the answer to the tenth question is 5*8?" "That's after I finish the tenth kick. He first stretched out four fingers, and then immediately clenched his fist, so I knew the answer to 40." 3. The teacher announced the results: "Xiaohua has thirty points, Xiaoming has twenty points..." Xiaozhu: I got 0. Yeah! Puppy: What should I do? Me too... Piggy: We both got the same score in the test. Will the teacher think we are cheating? 2. Mathematics Story It is said that one day, Zhuge Liang called his soldiers together and said: "Anyone among you, choose an integer from 1 to 1024 and keep it in your mind. I will ask ten questions and only ask for a 'yes' answer." Or 'no'.

After answering all ten questions, I will 'calculate' the number in your mind." Just as Zhuge Liang finished speaking, a counselor stood up and said that he had made his choice. A number.

Zhuge Liang asked: "The number you chose is greater than 512?" The counselor replied: "No." Zhuge Liang asked the counselor nine more questions, and the counselor answered them one by one.

Zhuge Liang finally said: "The number you remembered is 1." The counselor was extremely surprised when he heard this, because this number was really the number he chose.

Do you know what Zhuge Liang did? In fact, the method is very simple, that is, take half and half of 1024. When the tenth time is taken, it is "1". According to this principle, you can find the required number by asking ten questions in a row.

3. Mathematics Quotes 1. Wang Juzhen’s Percentage Chinese scientist Wang Juzhen has a motto when it comes to experimental failures, which is: “If you keep doing it, there is still a 50% chance of success. If you don’t do it, it will be a 100% failure.” 2 , Tolstoy's score When the great Russian writer Tolstoy talked about the evaluation of people, he compared people to a score.

He said: "A person is like a fraction. His actual talent is like the numerator, and his valuation of himself is like the denominator. The larger the denominator, the smaller the value of the fraction."

”

1. The essence of mathematics lies in its freedom. Cantor 2. In the field of mathematics, the art of asking questions is more important than the art of answering questions. Cantor ) 3. No question can touch people's emotions as deeply as infinity. Few other concepts can stimulate the intellect to produce fruitful thoughts like infinity. However, no other concept needs to be clarified as much as infinity. Hilbert 4. Mathematics is an infinite science. Herman Weyl 5. Questions are the heart of mathematics. P.R. Halmos 6. As long as a branch of science can raise a large number of questions, it is full of vitality. The lack of problems heralds the termination or decline of independent development. Hilbert 7. Some beautiful theorems in mathematics have the following characteristics: they are easily summarized from the facts, but the proofs are extremely hidden. Gauss 3, Rybakko Russia’s constants and variables Russian historian Rybakov said this about the use of time: “Time is a constant, but for those who are diligent, it is a ‘variable’. People who measure time in minutes have 59 times more time than those who measure time in hours. ”

2. Use symbols to write mottos 4. Hua Luogeng’s minus sign Hua Luogeng, a famous Chinese mathematician, pointed out when talking about learning and exploration: “In learning, you must dare to do subtraction, which is to subtract what has been solved by predecessors. part, to see what problems remain unresolved and need us to explore and solve them. " 5. Edison's plus sign. The great inventor Edison used a plus sign to describe genius when he talked about genius. He said: "Genius = 1% inspiration + 99% blood and sweat. ”

6. Dimitrov’s positive and negative sign Dimitrov, the famous international workers’ movement activist, said when evaluating a day’s work: “We must use time to think about what we do during the day.” What has happened, is it a 'positive sign' or a 'minus sign'. If it is '+', it means progress; if it is '-', you have to learn lessons and take measures. 3. Mottos written with formulas 7. Einstein’s formula When Einstein, the greatest scientist in modern times, was talking about the secret of success, he wrote down a formula: A=x+y+z.

And explained: A represents success, x represents hard work, y represents the correct method, and Z represents less empty talk. " "If the small circle represents the knowledge you have learned, and the large circle represents the knowledge I have learned, then the big circle represents. The area of ????is a little more, but the blank space outside the two circles is our ignorance surface.

The larger the circle, the more ignorance surfaces it touches.” -A. L. Cauchy, 1789 – 1857) Men pass away, but their deeds abide. Men pass away, but their deeds abide.

Laplace (1749 – 1827) What we know is not much. What we do not know is immense. What we know is very little, what we do not know is infinite. Hermite (C. Hermice 1822 – 1901) Abel has left mathematicians enough to keep them busy for 500 years. When he evaluated Abel, he once said: "Abel has left mathematicians enough to keep them busy for 500 years."

Poisson, Siméon 1781-1840 "Life is good for only two things, discovering mathematics and teaching.

3.5 grade mathematics jokes

The arithmetic teacher said: "There are 10 pears here, 6 have been eaten, how many are left? A gluttonous student replied: "I think we should eat the rest too." "

2. Rounding

Zaizai came back from school happily and asked his mother: "Where is daddy? "My mother saw Zaizai's excited look and asked strangely: "Dad is at home, what are you doing with him? "I asked Dad for 5 cents." " "Why? "My mother asked. "Before taking the math test, my father said to me, 'If I get 100 points, give me 1 yuan, and if I get 80 points, I will get 80 cents.' ’ Today, I scored 45 points on the math test. "Zai Zai replied. Mom asked in surprise: "What! Only scored 45 points on the math test? "Zai Zai said proudly: "Yes, it has to be rounded to 5 in mathematics, so dad must pay 5 cents. ”

3. Capital letters

A fashionably dressed girl walked into the remittance office of the post office, filled out the remittance form and handed it to the salesperson. The salesperson took a look at it, returned the order and said: “Numbers should be capitalized.

The girl tilted her head and said, "Uppercase?" The grid is so small, how can I write it in a big way? ”

4. Not wrong

Minmin: “7+3=10, how do you write 7+3=1?” "Baby: "It's just that the 0 at the end is not written! Minmin: "That's wrong!" The baby said: "0 doesn't mean nothing." "

5. Wu Zetian

In the history class, the teacher asked: "Who knows who Wu Zetian is? Student: "Wu Zetian is a mathematician. If you cross five, you will add something. She is the great mathematician who invented rounding." "

6. Waiting for the bus

"Dad, bus No. 4 is here! "Idiot, that's not Route 4, it's Route 31!" "The teacher said, 3+1=4!" "The little boy said confidently.

7. Here's the difference

Teacher Fang asked Axi in math class: "What is the difference between half and eight-sixteenths?" "Axi didn't answer. Teacher Fang said: "Think about it, if you were asked to choose half an orange or eight sixteenths of an orange, which one would you want? "Axi: "I definitely want half. ""Why? "A lot of orange juice has been lost when the orange is divided into sixteenths. Teacher, don't you think so?" ”

8. Calculation check

During the exam, a student took out the dice and rolled out the answers to ten multiple-choice questions.

At the end of the exam, he suddenly took it out again and rolled it out. .

The invigilator finally couldn’t bear it anymore: “What are you doing? "

The student replied: "I am checking the calculation. "

9. Rounding

Zaizai came back from school happily and asked his mother: "Where is daddy? "My mother saw Zaizai's excited look and asked strangely: "Dad is at home, what are you doing with him? "I asked Dad for 5 cents." ""Why? "My mother asked.

"Before taking the math test, my father said to me, 'If I get 100 points, give me 1 yuan, and if I get 80 points, I will get 80 cents. ’ Today, I scored 45 points on the math test. "Zai Zai replied.

Mom asked in surprise: "What! Only scored 45 points on the math test? Zaizai said proudly: "Yes, it has to be rounded off in mathematics, so dad must pay 5 cents." "

10. The teacher of the distributive law of multiplication found that a student's name on the homework book was: Mu (1+2+3).

The teacher asked: "Whose homework is this? Book? "A student stood up: "It's mine! "Teacher:" What's your name? "Student:" Mulinsen! "Teacher:" Then why did you write your name like this? "Student: "I use the distributive law of multiplication! "

4. Math jokes suitable for fifth-grade students

1. Mom came home and asked Xiao Ming: "How did your math test go?" "Xiao Ming said: "Yes, there is a calculation question that I can't solve. It asks 3*7=? , I just wrote 15 without caring about 3721."

2.1 said to 4: Stand at attention! 9 said to 6: Are you tired from thinking about it all day long? 9 said to 0: Don't think that you are a person if you cut off your tail! 1 said to 7: Brother, when did someone break your waist?

A statistician meets a mathematician, statistics A mathematician joked: "Didn't you say that if X=Y and Y=Z, then X=Z? So presumably if you like a girl, you will also like the boy that girl likes? "

The mathematician thought for a moment and asked: "Then if you put your left hand into a pot of boiling water at 100 degrees, and your right hand into a pot of ice water at zero degrees, it will be fine! Because they average just fifty degrees! "

I'm going to change my shape

Mathematics teachers are often used to saying to students who are distracted during class: "Pay attention! I'm going to... "

One day when he was explaining equations, he found that another classmate was not concentrating, so he slapped the table and said: "Attention, I am going to transform! ”

The spirits of all living beings were lifted up, and dozens of pairs of eyes were staring at him...

Mathematics Professor

A mathematics professor was standing on the road He was hit by a high-speed car, and the driver ran away without stopping. When the traffic police came to ask for the car's license plate number, the professor thought about it for a moment and said, "The one where I was knocked down." For a moment, I only saw an equation on the car: XY minus 517, the final difference is 24..."

Wu Zetian is a great mathematician

History teacher: "You know Who is Wu Zetian? ”

Student: “Wu Zetian is a mathematician. If five are passed, one will be added. This is the great mathematician who invented rounding. ”

5. Mathematics knowledge points for the fifth grade of primary school

Summary of knowledge points for the final review of the first volume of mathematics for the fifth grade of primary school Unit 1 Multiplication of decimals 1, Multiplication of decimals by integers (P2, 3): Meaning ——A simple operation to find the sum of several identical addends.

For example: 1.5*3 represents three times of 1.5 or a simple operation to calculate the sum of three 1.5s: first expand the decimal. into an integer; calculate the product according to the rules of integer multiplication; then look at how many decimals there are in the factor, count the decimal points from the right side of the product

2. Multiply the decimal by the decimal. (P4, 5): The meaning is to find out what fraction of this number is.

For example: 1.5*0.8 is to find what eight tenths of 1.5 is.

1.5*1.8 is to find what is 1.8 times 1.5. Calculation method: First expand the decimal into an integer; calculate the product according to the rules of integer multiplication; then look at how many decimals there are in the factor, and count the number of decimal points from the right side of the product.

Note: In the calculation results, the 0 at the end of the decimal part should be removed to simplify the decimal; when there are not enough digits in the decimal part, 0 should be used as a placeholder. 3. Rule (1) (P9): When a number (except 0) is multiplied by a number greater than 1, the product is greater than the original number; when a number (except 0) is multiplied by a number less than 1, the product is smaller than the original number.

4. There are generally three methods for finding approximate numbers: (P10) ⑴ rounding method; ⑵ rounding method; ⑶ tailing method 5. When calculating the amount of money, keep two decimal places, which means the calculation is to cents. Use one decimal place to calculate to the angle.

6. (P11) The order of the four arithmetic operations on decimals is the same as that on integers. 7. Laws and properties of operations: addition: commutative law of addition: a+b=b+a associative law of addition: (a+b)+c=a+(b+c) subtraction: properties of subtraction: a-b-c=a-(b+ c) a-(b-c)=a-b+c Multiplication: Commutative law of multiplication: a*b=b*a Associative law of multiplication: (a*b)*c=a*(b*c) Distributive law of multiplication: ( a+b)*c=a*c+b*c (a-b)*c=a*c-b*c Division: Properties of division: a÷b÷c=a÷(b*c) Unit 2 Decimal Division 8. The meaning of decimal division: knowing the product of two factors and one of the factors, find the operation of the other factor.

For example: 0.6÷0.3 means that given the product of two factors 0.6 and one of the factors 0.3, find the operation of the other factor. 9. Calculation method of dividing decimals by integers (P16): Divide decimals by integers and divide them by integer division.

The decimal point of the quotient should be aligned with the decimal point of the dividend. If the integer part is not enough to divide, the quotient is 0 and put the decimal point.

If there is a remainder, add 0 and divide. 10. (P21) Calculation method of division when the divisor is a decimal: first expand the divisor and dividend by the same multiple so that the divisor becomes an integer, and then calculate according to the rule of "divisor by decimal when the divisor is an integer".

Note: If the number of digits in the dividend is not enough, add 0 at the end of the dividend. 11. (P23) In practical applications, the quotient obtained by decimal division can also use the "rounding" method to retain a certain number of decimal places as needed to find the approximate number of the quotient.

12. (P24, 25) Change rules in division: ① Invariant quotient property: If the dividend and divisor expand or contract at the same time by the same multiple (except 0), the quotient remains unchanged. ②The divisor remains unchanged, the dividend expands, and the quotient expands accordingly.

③The dividend remains unchanged, the divisor shrinks and the quotient expands. 13. (P28) Repeating decimals: In the decimal part of a number, starting from a certain digit, one number or several numbers appear repeatedly in sequence. Such decimals are called recurring decimals.

Cyclic section: The decimal part of a recurring decimal, a number that repeats in sequence. For example, the cyclic section of 6.3232... is 32.14, and the number of digits in the decimal part is a finite decimal, which is called a finite decimal.

A decimal that has infinite digits in the decimal part is called an infinite decimal. Unit 3 Observing Objects 15. When observing objects from different angles, the shapes seen may be different; when observing a cuboid or cube, up to three faces can be seen from a fixed position.

Unit 4 Simple Equations 16. (P45) In equations containing letters, the multiplication sign between the letters can be recorded as "?", or it can be omitted. The plus sign, minus sign, division sign, and multiplication sign between numbers cannot be omitted.

17. a*a can be written as a?a or a, and a is read as the square of a. 2a means a+a18. Equation: An equation containing unknown numbers is called an equation.

The value of the unknown that makes the left and right sides of the equation equal is called the solution of the equation. The process of finding the solution to an equation is called solving the equation.

19. Principle of solving equations: balance on the scale. If the same number (except 0) is added, subtracted, multiplied, and divided on both sides of the equation at the same time, the equation still holds.

20. 10 quantitative relational expressions: addition: sum = addend + addend one addend = sum - two one addend subtraction: difference = minuend - minuend minuend = difference + Minus Minus = Minuend - Difference Multiplication: Product = Factor * Factor One factor = Product ÷ Another factor Division: Quotient = Divisor ÷ Divisor Divisor = Quotient * Divisor Divisor = Divisor ÷ Quotient 21. All equations are Equations, but equations are not necessarily all equations. 22. The process of testing the equation: the left side of the equation =... 23. The solution of the equation is a number; =... Solving the equation is a calculation process.

= Right side of the equation So, X=… is the solution to the equation.

Unit 5 Area of ??Polygon 23. Formula: Rectangle: Perimeter = (Length + Width) * 2 - Length = Perimeter ÷ 2 - Width; Width = Perimeter ÷ 2 - Long Letter formula: C = (a + b )*2 Area = length * width Letter formula: S = a Square: Perimeter = side length * 4 Letter formula: C = 4a Area = side length * side length Letter formula: S = a Parallelogram area = base * height Letter formula: S=ah Area of ??triangle = base * height ÷ 2 - Base = area * 2 ÷ height; height = area * 2 ÷ base Letter formula: S = ah ÷ 2 Area of ??trapezoid = (upper base + lower base )*Height÷2 Letter formula: S=(a+b)h÷2——Upper bottom=Area*2÷Height-Lower bottom, Lower bottom=Area*2÷Height-Upper bottom; Height=Area*2÷ (Upper base + lower base) 24. Derivation of the formula for the area of ??a parallelogram: shearing, translation 25. Derivation of the formula for the area of ??a triangle: a rotated parallelogram can be converted into a rectangle; two identical triangles can be put together to form a parallelogram, a rectangle The length is equal to the base of the parallelogram; the base of the parallelogram is equal to the base of the triangle; the width of the rectangle is equal to the height of the parallelogram; the height of the parallelogram is equal to the height of the triangle; the area of ??the rectangle is equal to the area of ??the parallelogram, and the The area is equal to twice the area of ??the triangle, because the area of ??the rectangle = length * width, so the area of ??the parallelogram = base * height.

Because the area of ??the parallelogram = base * height, the area of ??the triangle = base * height ÷ 226. Derivation of the trapezoid area formula: rotation 27. The second derivation of triangles and trapezoids.

6. All knowledge points of fifth-grade mathematics

Results of the final examination paper of fifth-grade mathematics volume 10: 1. Fill in the blanks: 20% 1. 2. 5 hours = ( ) hours ( ) divided into 5060 square decimeters = ( ) square meters 2. The divisor of 24 is ( ), and the prime factor of 24 is ( ) 3. The maximum true fraction whose fraction unit is 1/8 is ( ), and the minimum improper fraction is ( ) ).

4. The numerator of a simplest fraction is the smallest prime number, and the denominator is a composite number. The maximum fraction is ( ). If you add ( ) such fractional units, you get 1. 5. Cut a cuboid whose length, width and height are 5 decimeters, 3 decimeters and 2 decimeters respectively into two small cuboids. The maximum sum of the surface areas of these two small cuboids is ( ) square decimeters.

6. Use a 52 cm long iron wire to weld it into a rectangular frame. The frame is 6 cm long, 4 cm wide and ( ) cm high.

7. A=2*3*5, B=3*5*5, the greatest common divisor of A and B is ( ), and the least common multiple is ( ). 8. The edge length of the cube is expanded by 3 times, its surface area is expanded by ( ) times, and its volume is expanded by ( ) times.

9. Comparing 4/9 with 5/11, the fraction unit of ( ) is larger and the fraction value of ( ) is larger. 10. The greatest common divisor of two numbers is 8, and the least common multiple is 48. One number is 16, and the other number is ( ).

2. Multiple-choice question (fill in the correct answer number in the brackets): 20% 1. Among the following formulas, the formula that is divisible by integers is ( ) ① 4÷8=0.5 ② 39÷3 =13 ③ 5. 2÷2. 6=2 2. Among 2/3, 3/20 and 7/28, the fractions that can be converted into finite decimals are ( ) ① 3 ② 2 ③ 1 3. Two The product of prime numbers must be ( ) ① odd number ② even number ③ composite number 4. A=5B (A and B are both non-zero natural numbers) Which of the following statements is incorrect ( ) ① The greatest common divisor of A and B is A ② The least common multiple of A and B is A ③ A can be divided by B, and A has a divisor of 5 5. Add 10 grams of salt to 100 grams of water, then the salt accounts for ( ) of the salt water ① 1/9 ② 1/10 ③ 1 /11 6. It is known that a>b, then compare 2/a with 2/b ( ) ① 2/a> 2/b ②2/a 7. The greatest common divisor of two numbers is 12, the common denominator of these two numbers The number of numbers is ( ) ① 2 ② 4 ③ 6 8. A small piece is dug out of a cuboid (as shown in the picture). The following statement is completely correct ( ) ① The volume decreases, and the surface area also decreases ② The volume decreases, and the surface area Increase ③ Volume decreases, surface area remains unchanged 9. Use rectangular papers of equal size, each 12 cm long and 8 cm wide. To form a square, you need at least this kind of rectangular paper ( ).

① 4 pieces ② 6 pieces ③ 8 pieces 10. A 6-meter-long rope, first cut off 1/2, then cut off 1/2 meter, then there is still ( ) ① 5 meters ② 5/2 meters ③ 0 meters 3. Calculation questions: 28% 1. Find the surface area and volume of the cuboid (unit: decimeter) 4% a=8 b=5 c=4 2. Off-form calculation (can do simple calculations) Simplified calculation) 12% 6/7+2/15+1/7+ 13/15 19/21+5/7-3/14 2/3+5/9-2/3+5/9 8/9- (1/4-1/9)- 3/4 3. Find the greatest common divisor and least common multiple of each group of numbers in the bottom column 4% 24 and 36 18, 24 and 40 (only find the least common multiple) 4. Word questions 6% What is the result of subtracting 1/2 from the sum of 5/9 and 7/18? Subtract the difference between 7/15 and 7/30 from a number. The result is 2/3. What is this number? (Use equations to solve) 4. Graphing questions 4% Please use the method of shading to express 1/2 (at least 5 types) 5. Application questions: 30% 1. A piece of land, 1/5 of which is corn, 1/6 Plant vegetables and the rest plant watermelons. What percentage of the land is planted with watermelons? 2. There are 24 boys and 20 girls in a certain class. How many times are the number of boys than girls? What fraction of the number of girls is the number of boys? 3. Students participate in environmental protection activities.

The fifth graders collected 3/5 tons of garbage, which was 1/8 ton less than the sixth graders. How many tons of garbage does the fifth and sixth grade *** clean up? 4. Take a rectangular iron plate 40 cm long and 30 cm wide, cut off its four corners into squares with a side length of 4 cm, and then weld it into a box without a lid.

What is its volume in liters? 5. A car traveled 192 kilometers per hour in the first 3 hours and 58 kilometers per hour in the next 2 hours. What is the average speed of the car? .

7. Fifth grade mathematics story

1. Xiaohua’s father can cut 5 of his own nails in one minute. How many nails can he cut in 5 minutes?

2. Xiaohua went to the store with 50 yuan to buy a car worth 38 yuan, but the salesperson only gave him 2 yuan in change. Why?

3. Xiao Jun said: "I went fishing yesterday and caught a tailless fish, two headless fish, and three half-cut fish. Guess how many fish I caught in one *** ? "Guess how many fish Xiaojun caught in one day?"

4.6 horses pulled a cart for 6 miles. How many miles did each horse travel? How many miles did 6 horses travel in one ***?

5. A puppy tied to a tree trunk greedily eats a bone on the ground, but the rope is not long enough, missing by 5 centimeters. How can you teach a puppy how to hold a bone?

6. Wang went from place A to place B. One minute later, Li went from place B to place A. When Wang and Li meet on the way, which one is farther from place A?

7. The clock just struck 13, what should you do now?

8. On the vast grassland, there is a cow grazing. The cow only eats half of the grass in the meadow in one year. Ask, how many years will it take for it to eat up all the grass in the meadow?

9. A mother has 7 pieces of candy and wants to divide them equally among the three children, but is unwilling to cut the remaining pieces of candy. What should the mother do?

10. There is a row of trees beside the road in the park. Each tree is 3 meters apart. How many meters are there between the first tree and the sixth tree?

11. Divide 8 into two halves according to the following method. What is the value of each half? The average score in arithmetic is ____, the score horizontally from the middle is ____, and the score vertically from the middle is ____.

12. A house has 4 corners, and there is a cat in one corner. In front of each cat There are 3 cats. How many cats are there in the room?

13. A house has 4 corners. There is a cat in one corner, and there are 4 cats in front of each cat. How many cats are there in the room?

14. Xiaojun, Xiaohong, and Xiaoping played chess, and the general manager played 3 games. Ask them how many games of chess each played? (Each game of chess is played by two people)

15. Xiao Ming and Xiao Hua each have a bag of candy, but they don’t know how many pieces are in each bag. I only know that after Xiao Ming gave Xiao Hua 8 yuan, Xiao Hua gave Xiao Ming 14 yuan. At this time, the number of candies in their bags was exactly the same. Classmates, who do you think has more sugar? How many more?

Answer:

1.20 pieces, including fingernails and toenails

2. Because he paid the salesperson 40 yuan, he only gave him 2 yuan in change;

3.0, because the fish he caught does not exist;

4.6, 36;

5. Just teach the puppy to turn around. Just grab the bone with your back foot and that's it.

6. When they met, they were in the same place, so they were both equally far away from place A;

7. The clock should be repaired;

8. It You will never eat all the grass, because the grass will continue to grow;

9. The mother eats one piece first, and then gives two pieces to each child;

10.15 meters;

11.4,0,3.

12.4 pieces;

13.5 pieces;

14.2 plates;

15. Original Xiaohua has more candy; 14-8=6 pieces. Because the two people were given 6 more pieces of candy, the number of candy pieces is exactly the same, so it turns out that Xiaohua has 12 pieces more than Xiao Ming.