Use a 2-meter-long wood, saw into four pieces of the same length, used to make stool legs, the height of the stool is about______ Decimeter
2 × 10 = 20; 2 m = 20 decimeters; 20 △ 4 = 5 (decimeters). A: the height of this stool is about 5 decimeters
Use a 2-meter-long wood, saw into four pieces of the same length, used to make stool legs, the height of the stool is about______ Decimeter
2 × 10 = 20; 2 m = 20 decimeters; 20 △ 4 = 5 (decimeters). A: the height of this stool is about 5 decimeters
Use a 2-meter-long wood, saw into four pieces of the same length, used to make stool legs, the height of the stool is about______ Decimeter
2 × 10 = 20; 2 m = 20 decimeters; 20 △ 4 = 5 (decimeters). A: the height of this stool is about 5 decimeters
RELATED INFORMATIONS
- 1. There are three legged chairs and four legged chairs in the classroom. It is known that there are 60 chair legs and 15 chairs, How many are the three legged chair and the four legged chair?
- 2. There are several stools and chairs in the room. Each stool has three legs and each chair has four legs. When they are all sat on, there are 43 legs, including two for each person Leg, how many people are there in the room
- 3. There are several three legged stools and four legged chairs, and they are all manned. If there are 39 legs, how many people are there?
- 4. The general steps of solving practical problems with equations Be brief (no more than 27 words)
- 5. Set up equations to solve practical problems== The ratio of output per unit area of a and B crops is 1:1.5. Now we need to divide a 200 meter long and 100 meter wide rectangular land into two small rectangles. How to divide the two crops into two parts, so that the ratio of total output value of a and B crops is 3:4 (the result is taken as an integer) Tip: if the length is ab, take a little e, AE = XM, be = YM To calculate the process! ~ ~ will add points~~~~
- 6. 1: If the bus starts from a for 9 hours, the distance between the two vehicles is 3000 km. How many meters is the distance between a and B 2: Car a and car B leave from city a and city B at the same time, and they can meet each other in six hours. Now car a starts from city a, and it's 210 kilometers away from city B one hour later. Car B starts from city B, and it's 230 kilometers away from city a one hour later. How many kilometers are there between city a and city B 3: A batch of pesticides was transported to a village. 4 / 7 of the total amount was used in the first day, 12 kg more than twice the amount used in the second day. At this time, the ratio between the amount used and the rest is 27:8. How many kg does this batch of pesticides weigh 4: A truck team transported a batch of cement from the factory to the construction site. On the first day, it transported more than 1 / 4 7 tons of all cement, and on the second day, it transported the remaining 2 / 5 more than 2 tons. At this time, it transported 5 / 18 of all cement. How many tons of original cement 5: After 1 / 3 of the coal in pile a and pile B is transported to pile B, 40% of the coal is transported from pile B to pile A. at this time, there are 48 tons in pile a and 42 tons in pile B. how many tons of coal are there in pile a and pile B
- 7. In the first quarter of 2006, the output value of a hardware factory in a city was 150000, 200000 in the second quarter, 230000 in the third quarter, 280000 in the fourth quarter, 10 in the first quarter, 12 in the second quarter, 15 in the third quarter and 18 in the fourth quarter. According to the average quarterly growth rate in 2006, how many million annual output value in 2007?
- 8. The explanation of intersecting line and parallel line How to answer? From which aspects
- 9. A family of three travel to the North during the holiday. There are two local travel agencies, a and B, whose prices are the same, but there are concessions for family travel. A travel agency says that adults don't discount, while children get 60% off. B travel agency says that all three people get 20% off. After accounting, B travel agency wants 240 yuan cheaper. How much is the adult's price?
- 10. Make a straight line through a vertex of a polygon. After cutting off two corners of the polygon, the sum of its internal angles is 1260 degrees. What is the number of original sides of the polygon?
- 11. A student desk consists of a desk top and four legs. If one cubic meter of wood can make 50 desks or 300 legs, there are 15 cubic meters of wood A student desk is composed of a desk top and four legs. If one cubic meter of wood can make 50 desks or 300 legs, and there are 15 cubic meters of wood, please design how much wood to use for the desk top and how much wood to use for the legs?
- 12. A student desk consists of one desk top and four legs. If one cubic meter can make 50 desks or 300 legs, there are 15 cubic meters of wood, Please design how much wood to use for the table top and how much wood to use for the table legs
- 13. A student desk consists of a desk top and four legs. If one cubic meter of wood can produce 50 desks or 300 legs, there are 15 cubic meters of wood, Make them match (equation of first degree with one variable)
- 14. If a round table can be made of 5 cubic meters of wood, then the table can be made of 1 cubic meter of wood and 5 legs For example, please list the equation of one dollar
- 15. We need to solve the linear equation with one variable For a three digit number, a hundred digit number is 4 times smaller than a single digit number, and a ten digit number is 1 times larger than the sum of a single digit number and a hundred digit number. The value of the three digit number is just 25 times that of the ten digit number
- 16. When an aircraft flies between the two cities, the wind speed is 24 km / h, it takes 2 hours and 50 minutes to fly against the wind, and it takes 3 hours to fly against the wind to calculate the speed of the aircraft when there is no wind
- 17. Several primary school mathematics application problems, help to solve 1. The length of a wall clock's hand is 20 cm. How many cm does the tip of the hand walk in a day and night? 2. The diameter of a round flower bed is 3 meters. A circle of railings is set 0.8 meters away from the flower bed. How many meters is the total length of the railings? 3. The circumference of a piece of square paper is 20 decimeters. Cut it into the largest circle. How many decimeters is the circumference of this circle? 4. The express train from a to B runs in 8 hours, and the local train from B to a runs in 12 hours. The two trains run from a and B at the same time. On the way, the two trains meet and continue to move forward. After 6 hours, the distance between the two trains is 90 kilometers. How many meters is the distance between a and B? Want arithmetic solution, don't equation solution, also want to explain, trouble, online, etc., will add reward, hurry up
- 18. Use a simple method to calculate the scores of the following questions Two nines minus seven sixteen times two nines Two fifths by four times three fourths One half by one-fifth plus one-third by one-half Four fifths by seven ninths by five eighties Five sixths by five nines plus five nines by one sixth Five out of seven by sixteen by twenty-one out of five
- 19. Asking for help: two practical problems in sixth grade mathematics of primary school The first topic is: There are 18 spiders, dragonflies and cicadas, with 118 legs and 20 pairs of wings. It is known that spiders have 8 legs, dragonflies have 6 legs and 2 pairs of wings, and cicadas have 6 legs and 1 pair of wings?
- 20. Xishan primary school is going to build a multi-functional classroom. It needs 1600 pieces of wood floor with a length of 50 cm, a width of 10 cm and a thickness of 3 cm to lay the floor. How large is the area of this multi-functional classroom? How many cubic meters of wood should be used to lay the floor? Pour 12 cubic decimeters of water into a 3-decimeter-long, 2-decimeter-wide and 4-decimeter-high rectangular glass tank. How many decimeters is the distance between the water surface and the tank mouth?