Application of Olympiad Mathematics in the Third Grade of Primary School (1-20)
1.( 1) The two factors are 7 and 12 respectively. What is the product? (2) What is three times 250?
2. A tiger weighs 180kg, and a bear weighs twice as much as a tiger. How much does this bear weigh?
The fruit shop sent 20 boxes of pears, 25 kilograms each. 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?
There are 36 students in the school art group, including 27 girls. How many times the number of girls is that of boys?
6. 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?
7. Multiply a number by 10 to get a number 72 more than the original number. What was the original number?
8. 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?
9. What is the product of (1) minimum two digits?
(2) What is the product of the two digits of and the smallest two digits?
10. In a volleyball tournament, 32 teams participated, and each team had 12 players. How many athletes are there?
1 1. The toy production team used to make 40 toys every day, but now the daily output is 10 times. How many more pieces do you make every day than before?
12. 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?
13. Three classes in Grade Three11/person. There are 35 students in Class One, and there are equal students in Class Two and Class Three. How many people are there in Class Two and Class Three?
What is the product of 14? ( 1)?
(2) How many digits may the product of two digits multiplied by two digits be?
15. The school bought 25 sets of big sportswear and 45 sets of small sportswear. Large 57 yuan, small 52 yuan.
(1) How much are two kinds of sportswear?
(2) How much should a * * * pay?
16. The school bought some homework and distributed it to 15 classes, each class had 164 copies, and there were 420 copies left. How many exercise books did the school buy?
17. Can the following questions be worked out directly without writing vertically?
1 1×22 12×33 14×55 15×66
18. Tiger raised 18 hens in May and laid 450 eggs, 36 more than in April. How many eggs have been laid in these two months?
19. These two factors are 63 and 4 respectively. What is the product? When the factor 4 is amplified by 10 times and 100 times, what are the products respectively?
20. A factory uses three cars to transport coal, and one * * * transports 9750 Jin of coal. How many kilograms does each car transport on average?
Application of Olympiad Mathematics in the Third Grade of Primary School (2 1-40)
2 1. The store has four baskets of apples, each of which is 55kg. We have sold 135kg. How many kilograms of apples are left? 22. There are 24 people in the art group, and the number of people in the sports group is four times that of the art group. How many people are there in the two groups?
23. Each box of chalk 1 yuan is 3.4 points, and each bottle of ink is 6.2 points. The school bought 6 boxes of chalk and 5 bottles of ink. How much will it cost?
24. There are nine basketballs, and the number of football is eight times that of basketball. How many footballs are there?
25. There are 72 footballs and 9 basketballs. How many times is football more than basketball?
26. There are 72 football, which is exactly eight times the number of basketball. How many basketballs are there?
27. The school bought six boxes of books, each containing 50 books, which were distributed to four grades on average. How many books are distributed in each grade?
28. Plant a tree every 5 meters on the side of a 3-kilometer-long expressway. How many sections should a tree be divided into?
29. Xiaoming has to walk 200 meters from home to school. If he walks back and forth twice, how many meters will he walk?
30. There are 19 yellow balloons in the store. There are seven yellow balloons missing from Le Ballon Rouge, and the number of flower balloons is twice that of Le Ballon Rouge. How many?
3 1. Students do exercises. Xiaohua made 75, Xiaoming made 85, and Xiaoqing made 30, which is less than Xiaoming's total in Obana. How many did Xiaoqing make?
32. There are 14 poplars in the school. The number of poplars is twice that of pine trees, and there are four more willows than pine trees. How many willows are there?
33. There are 46 students in Grade Three (1), of whom 2 1 are girls. How many more boys than girls?
There are seven big monkeys in the park, and the number of little monkeys is only nine more than that of big monkeys. How many monkeys are there in the park?
35.A has 140 yuan, which is twice that of B. How many are A and B respectively?
36. A train departs from A to B at 5: 00 a.m. and arrives at B at 3: 00 p.m. according to the original plan, but the actual arrival time is 5: 00 p.m. sharp, two hours late. How many kilometers does the train actually travel per hour?
37.A train departs from A to B at 8: 00 a.m., travels at 60 kilometers per hour as planned, and arrives at B at 4: 00 p.m. ... but it is actually two hours late. How many kilometers does this car actually travel per hour?
38. Xiao Ning, Xiaohong and Xiaojia went to buy pencils, Xiao Ning bought seven, Xiaohong bought five, and Xiaojia didn't. After returning home, the three men divided the pencils equally, and Xiao Jia took out 80 cents. How much should Xiao Jia give Ning? How much is Xiaohong?
39. Three good friends went to buy drinks. Liang Xiao bought five bottles, Xiaohua bought four bottles, and Yang Yang didn't. When they got home, the three people drank a little wine on average. Yang Yang took out 6 yuan's money. How much should he give Xiao Liang? How much does it cost?
40. Pour the milk into the empty bottle with a cup. If you pour 2 cups of milk, the bottle will weigh 450 grams. If you pour 5 cups of milk, the bottle will weigh 750 grams. How many grams does a glass of milk and an empty bottle weigh?
Application of Olympiad Mathematics in the Third Grade of Primary School (4 1-60)
4 1. limin fruit shop delivers 500 kg peaches and sells 13 baskets, with an average of 25 kg per basket. How many kilograms of peaches are left? 42. There are 1440 people studying in RTVU in a county. Prepare a TV set for every 8 people. 95 sets have been prepared. How many sets are still missing?
43. The school bought four footballs to go to 220 yuan. A basketball is more expensive than a football, 8 yuan. How much does it cost to buy four basketballs?
44. A grain processing factory ground a batch of rice. 96 bags have been packed, each bag is 75 kilograms, and the remaining 2700 kilograms are not packed. This batch of rice is shipped out in two batches on average. How many kilograms are shipped out in one batch?
45. Daxing Forest Farm planted 386 pine trees last year, planting three times as many poplars as pine trees. How many poplars have been planted?
46. There are 290 red goldfish in the fish pond in the park, about four times as many as the red goldfish. How many goldfish have been stocked?
47. The amount of rice sold by a grain store in three days is 430 kg, 380 kg and 407 kg respectively. How many Jin of rice does this grain store sell in three days?
48. A dormitory building has 20 steps between two floors, and the height of each step is 15cm. A classmate walked from the first floor to the third floor. How many meters did he rise?
49. Pigeons can fly 2 kilometers per minute, and Swifts fly 3 kilometers more than pigeons. How many kilometers can Swift fly per hour?
50. A grain store shipped 5 tons of rice, sold 1700 Jin two days ago, and sold out in the remaining three days. How much did it sell on average every day in the first two days?
5 1. A fruit shop shipped 150 kg of apples, with an average of 6 baskets, with 2 yuan per kg of apples. How much is a basket of apples?
52. Zhang Hua goes to the Children's Palace by bike from school. It is known that he rides a bike for 8 minutes at 2 10 meters per minute, and there is still 140 meters from the Children's Palace. How far is it from the school to the Children's Palace?
53. The number of meters of blue cloth sold in shops is four times that of printed cloth. Sell 93 meters printed cloth, how many meters of blue cloth?
54. Last year, 940 fry were raised in the pond of Lianhua Village. The number of fry released this year is three times that of last year. How much more has been done this year than last year?
55. The tractor travels 300 meters per minute, the truck travels 300 meters more than the tractor, and how many meters does the truck travel in 6 minutes?
56. A building has six floors and is divided into four units. Each unit has 2 households on the first floor and 3 households on the second to sixth floors. How many households can live in this building?
57. In the past, a pencil was 8 cm and 7 mm long, but now it is 9 mm long. How long is this pencil now?
58. Wuhan Yangtze River Bridge is 1670 meters long and Nanjing Yangtze River Bridge is 6772 meters long. Which bridge is long? How many meters has it grown?
59. The track of the sports ground is 400 meters. Xiaoming insists on running three times a day. How many meters does he run every day?
60. From A to B, if you ride a bike, you can drive15km per hour and get there in 4 hours. If you take a bus, it only takes 2 hours. How many kilometers does this car travel per hour?