The problem of poor Olympic mathematics has been applied in the fourth grade of primary school.
1. One day, members of the fishing associations A, B and C went fishing in the suburbs. As we all know, A catches six more fish than B, C catches twice as many fish as A and 22 more fish than B.. How many fish did they catch? 2. A team member went to the nursing home with a basket of apples and pears. Every time, he takes out two pears and five apples from the basket for the old man. Finally, there are 1 1 apples left, and the pears have just been eaten. Then they remembered that there were three times as many apples as pears. How many apples and pears are there in the basket?
The difference between two numbers of known size is 5.49. Shifting the decimal point of a larger number to the left is equal to a smaller number. What's the bigger number? What's the smaller number?
4. It is known that the quotient of two numbers is 4, and the difference between these two numbers is 39, so what is the smaller number of these two numbers?
5. The difference between numbers A and B is 9, and 1/6 of number A is equal to 1/4 of number B. What is number A? What is the number b?
6. The number of outdoor activities in Yuhong Primary School is 480 more than that in indoor activities. Now 50 people who participate in indoor activities are changed to outdoor activities, so the number of people who participate in outdoor activities is exactly five times that of indoor activities. How many people took part in indoor and outdoor activities?
7. The difference between four numbers is 1/80, and their ratio is 1: 3: 5: 7. Find the sum of these four numbers.
8. Xiaoming is 9 years old and his father is 39 years old. How many teenage fathers are exactly twice the age of Xiao Ming?
9. There are two baskets of apples. If you take out nine apples from the first basket and put them in the second basket, the number of apples in the two baskets is equal; If you take 12 apples from the second basket and put them in the first basket, the number of apples in the first basket is equal to twice that in the second basket. How many apples are there in each basket?
10. The number of male workers in the workshop is twice that of female workers. If 18 male employees are transferred, female employees are twice as many as male employees. How many women workers are there in this workshop?
Application of Olympic Mathematics Difference in the Fourth Grade of Primary School Ⅱ
1, a basket of apples is 40 kilograms heavier than a basket of oranges, and the weight of apples is five times that of oranges. How many kilograms are apples and oranges? There are a flock of sheep on the hillside, including sheep and goats. There are 55 known sheep three times more than goats, and 345 known sheep are more than goats. How many sheep are there in each species?
3. Yucai Primary School has 45 times fewer people participating in the science and technology group than the choir, and more people participating in the science and technology group than the choir 105. How many students are there in the science and technology group and the choir respectively?
The number of extracurricular books in Xiaofang is three times that in Xiao Qiang. If Xiaofang lends Xiao Qiang 10 books, Xiao Qiang's books are three times as many as Xiaofang's. How many extracurricular books are there in Xiao Fang and Xiao Qiang?
5. Warehouse A stores 500 bags of rice and Warehouse B stores 200 bags of rice. Now the same number of bags of rice are shipped from two warehouses. As a result, the remaining rice in warehouse A is exactly three times as much as that in warehouse B. How many bags of rice did each warehouse transport?
6. In a workshop, there are 35 fewer women workers than men. 17 after the transfer of male and female employees, the number of male employees is twice that of female employees. How many men and women are there?
7. The sum of the differences between number A and number B is equal to 6, so what is the sum of number A and number B?
The number of male workers in the workshop is twice that of female workers. If 18 male employees are transferred, female employees are twice as many as male employees. How many women workers are there in this workshop?
9. There are two goldfish bowls. If you take five goldfish out of the first tank and put them in the second tank, the number of goldfish in the two tanks is equal. It is known that the number of goldfish in cylinder A is 1, which is 2/3 times that of cylinder B. How many goldfish are there in cylinder A?
10, two baskets of apples with the same weight, basket A sells 7 kilograms, and basket B sells 19 kilograms. After that, the remaining kilograms of basket A are three times that of basket B. How many kilograms are there in each basket?
Application of Olympic Mathematics Differences in the Fourth Grade of Primary School
1, Linxia primary school bought three times as much volleyball as basketball, and volleyball was more than basketball 18. How many volleyball and basketball did you buy? How many volleyball and basketball did you buy?
There are two bookshelves, the big one and the small one. There are four times as many books on the big shelf as on the small shelf. If you take out 150 books from the big shelf and put them on the small shelf, the number of books on the two shelves is equal. How many books are there in each bookcase?
3. Old cats and kittens go fishing. This old cat catches three times as much as a kitten. If the old cat gives the kitten three, the kitten is two less than the old cat. How many fish do two cats catch?
Teacher Zhang bought back 83 more basketball balls than football, among which basketball is twice as many as football with 5 more balls. How many of these two kinds of balls are there?
5. The kilograms of white sugar in the grocery store are 35 kilograms less than those of brown sugar, and it is known that white sugar is 4 1 kg more than brown sugar. How many kilograms of white sugar and brown sugar are there in the grocery store?
6. Teacher Zhang bought basketball, football and volleyball, among which football is three times as much as basketball, football is seven times more than volleyball, and volleyball is more than basketball 1 1. How many balls do these three kinds have?
7. Pears are 2000 kilograms heavier than grapes, apples are twice as heavy as grapes, and apples are 3000 kilograms heavier than pears. How many kilograms are apples, pears and grapes?
8. Xiaoming's deposit is three times that of Xiaogang. Now Xiaoming takes out 380 yuan and Xiaogang takes out 1 10 yuan, and the deposit amounts of the two people become the same. How much did Xiaoming and Xiaogang save?
9. The tonnage of grain stored in warehouse A is three times that of warehouse B. If 60 tons are taken from warehouse A and 80 tons are brought from warehouse B, the tonnage of grain stored in two granaries A and B is exactly the same. How many tons of grain are stored in granaries A and B respectively?
10, two granaries, A and B, each store several tons of grain, and the grain stored in warehouse A is three times that of warehouse B. If warehouse A transports 60 tons and warehouse B transports 260 tons, then the tons of grain stored in two granaries A and B are equal. How many tons of grain are stored in granaries A and B respectively?