1. Math application problems in grade three
1. The admission ticket number of a student who participated in the math contest is a four-digit number. It is known that the single digit is three times that of the ten digit, the ten digit is three times that of the hundred digit, and the sum of the four digits is 15. Find this classmate's admission ticket number. 2. There are 20 people building the expressway, which is scheduled to be completed in 15 days. Three days after the start of construction, five people were taken out to plant trees, and the rest continued to build roads. If everyone's work efficiency remains the same, how many days will it actually take to complete this section?
Three workers process 90 parts in 5 hours. /kloc-how many workers does it take to complete the processing of 540 parts in 0/0 hour?
The price of two basketballs can buy six volleyballs, and the price of six footballs can buy three basketballs. Volleyball, football and tennis, you can buy 1 basketball at the price of 1. So, how many tennis balls can you buy at the price of 1 basketball?
5. Warehouse A stores 128 tons of grain, and warehouse B stores 52 tons of grain. Warehouse A transports 12 tons per day, and warehouse B transports 7 tons per day. So how many days later will the grain quantity of the two warehouses be the same?
6. Class 1, Grade 3 elects the monitor, and everyone votes to choose one of the three candidates A, B and C. It is known that there are 52 students in Class * * *, and at a certain moment in the counting process, A gets 17 votes, B gets 16 votes, and C gets1/kloc-0. If the candidate who gets more votes than the other two becomes the monitor, how many more votes will A get to ensure his election?
7. There are 60 students in one class of Huaqiao Primary School. When watching the "Comrade Deng Xiaoping Memorial Conference", they wore white or black shirts and black or blue trousers. Among them, 12 people wear white shirts and blue pants, 34 people wear black pants and 29 people wear black shirts. So how many people wear black shirts and pants?
8. Team A and Team B dug a canal with a length of 8,250m, and Team B dug150m more than Team A every day. It is known that Team A dug for 4 days, and the other two teams dug for 7 days, and the task was completed. So how many meters does Team A dig every day?
9. Bonuses are divided into first prize, second prize and third prize. The bonus of each first prize is twice that of each second prize, and the bonus of each second prize is twice that of each third prize. If there are two people in the first, second and third prizes, then the bonus of each first prize is 308 yuan; If there are/kloc-0 first prize, 2 second prizes and 3 third prizes, what is the bonus of the first prize?
10, a unit held a Spring Festival tea party and bought four boxes of apples with the same weight, each of which took out 24 kilograms. As a result, the sum of the remaining apples in each box is exactly equal to the original box. So how much does each box of apples weigh?
2. The third grade elementary school math problem application problem.
1, a tiger weighs 180 kg, and a bear weighs twice as much as a tiger. How much does this bear weigh? The fruit shop sent 20 boxes of pears, each of which was 25 kilograms. Sold 325 kilograms, how many kilograms are left?
Miss Wang bought a volleyball with 40 yuan, and spent three times as much money on basketball as volleyball. How much did Mr. Wang spend on a ball?
4. There are 36 students in the school art group, including 27 girls. How many times the number of girls is that of boys?
5. Students collect the seeds of trees. Collected15kg. How many kilograms are collected, and the total weight of tree species is exactly three times that of the original?
6. Multiply a number by 10 to get a number 72 more than the original number. What was the original number?
7. The price of bicycles is 182 yuan, and the price of motorcycles is 10 times that of bicycles, 700 yuan. What is the price of a motorcycle? How much is a motorcycle more expensive than a bicycle?
8. In a volleyball championship, 32 teams participated, and each team had 12 athletes. How many athletes are there?
9. The toy production team used to make 40 toys every day, but now the daily output is 10 times of the original. How many more pieces do you make every day than before?
10, the product of three digits multiplied by 6 is equal to the product of 4 1 multiplied by 18. What is this three-digit number?
3. Third-grade math application problems
1, there are 30 students, 15 is here. There are five students in a row. How many rows can they line up? 2. Make a square with a 36 cm iron wire. How long are the sides of this square?
3, a rope is 25 meters long, first cut off 10 meters, and make a short jump rope every two meters for the rest. How many short jump ropes can you make? How many meters are left?
4. Cut a rectangular piece of paper with a length of 36 cm and a width of 18 cm into two squares. What is the circumference of a square?
A rope is 5 times 45 meters, and a wire is 7 times that of this rope. How long is this wire?
6. To build a 945-meter road, 354 meters were built in the first month, 276 meters in the second month, and how many meters will it take in the third month?
7. The supermarket sold 153kg of rice in the morning, and there were 56 more bags in the afternoon than in the morning. How many bags of rice did the worker sell today?
8. The fruit shop sent back 54 baskets of fruit, 48 of which were apples and the rest were pears. How many times are there more apples in baskets than pears?
9. A car travels 55 kilometers per hour. According to this calculation, how many kilometers can you drive in 4 hours?
10, 32 white rabbits and 26 black rabbits were raised in the feeding group. The number of grey rabbits is less than the total number of white rabbits 18. How many gray rabbits will you raise?
4. Third-grade math application problems
1, 238 yuan for a VCD and 458 yuan for a scanner. Dad brought 800 yuan. Is it enough? Uncle Zhang caught 700 Jin of fish, and sold 523 Jin in the morning, and sold 394 Jin less in the afternoon than in the morning.
(1) How many Jin did you sell this afternoon? (2) How many kilograms did a * * * sell on this day? (3) How many kilograms are left?
Xiaoming and his sister go to the bookstore together. My sister bought an English dictionary in 87 yuan, and Xiaoming bought a science book in 24 yuan. My sister paid the cashier 150 yuan. How much should I get back?
4. Make a picture frame 30cm long and 26cm wide for a picture. What is the circumference of the photo frame at least?
5. Make a big rectangle with two rectangles 4 cm long and 3 cm wide. What is the circumference of a big rectangle?
6. The playground of Xiangyang Primary School is rectangular, with a length of100m and a width of 65m. Xiao Qiang ran around the playground twice. How many meters did Xiao Qiang run?
7. There are 3 students1person and 2 teachers. Each ship is limited to four people. How many boats should I rent at least?
8. A pair of China chess 16 yuan, a pair of checkers 12 yuan, and a pair of Go is three times the sum of a pair of China chess and a pair of checkers. Xiao Ming takes 80 yuan, is it enough to buy a pair of Go?
9. The students proposed to donate 400 books to "Hand in Hand" school. 58 books were donated from grade one to grade six. How many books do I have to donate to reach 400?
Planting trees in spring. Plant 12 in the fifth grade and 16 in the sixth grade. The number of trees planted in the whole school is three times that of the fifth and sixth grades. How many trees have been planted in the whole school?
5. Math application problems in grade three.
1 and the students in Grade Three went to work in the tea garden. There are 56 girls and 64 boys. Four students are divided into one group. How many groups can a * * * be divided into? There are 90 students in Grade Three. Every two students use a desk. How many tables do they need? Put these desks in three classrooms on average. How many people are there in each classroom?
3. A children's TV series ***336 minutes, divided into 8 episodes. How long does each episode last?
4. 389 students from Chunyu Primary School visited the Natural History Museum. Each car must carry 45 people. Is it enough to rent 9 cars?
There are 530 chairs, which are shipped in five times. How many chairs are shipped on average each time? What if the goods are delivered in four installments?
6. The opening hours of the art exhibition are 8:00- 17:00 every day. How long does this art exhibition last every day?
7. A volleyball match starts at 19: 30 and lasts for 155 minutes. What time does the game end?
8. How much does it cost for Xiaoming to buy 20 8-cent stamps and 30 2 yuan stamps?
9. It takes about 600 kilograms of mulberry leaves to raise a silkworm, which can produce about 50 kilograms of cocoons. There are four silkworms in my family. How many Jin of cocoons can they produce? How many kilograms of mulberry leaves do you need? Zhang Cun keeps 40 silkworms. How many kilograms of cocoons can it produce?
10, the basketball court is 28m long and15m wide. How many square meters is its area? How many square meters is the half court?