1. If 2x-y = 0 and X-5 > y, then the value range of X and Y is X=____ ,y=____ . 2. The equation (M + 2) X-2 = 1-m (4-x) has (1) positive solutions and (2) no more than 2 solutions

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• 1. Ask some questions about sixth grade math 1. The quotient of number a divided by number B is 0.75, number A: number b = (): () 2. With a scale of 20:1, draw a 4 mm watch part on the drawing. The length of the part on the drawing is () 3. The number of safflower is 1 / 4 more than that of safflower, safflower: yellow flower = (): (), yellow flower is less than that of safflower ()
• 2. 1. Party A and Party B cooperate to complete a batch of work. At the end of the work, Party A completes four fifths of that of Party B. Party A will be paid according to the amount of work completed. If Party A gets 480 yuan, how much should Party B get? 2. Two thirds of the number a is equal to one fourth of the number B. given that the number a is 15 less than the number B, find the number a? 3. Team a, B and C jointly built a canal. Team a built 30% of the total length, team B built 70 meters more than team a, and team C built 210 meters. How long is the canal? 4. Party A and Party B set out from a and B to go towards each other. When they met, Party A's car traveled 4% less than 8 kilometers of the whole journey, and Party B's car traveled more than 40% more than 32 kilometers of the whole journey. How many kilometers are there between a and B? I want formula ~ formula... I don't want equation
• 3. Qunyi furniture factory sells 1 / 5 of the five drawer cabinets, 120 less than the five drawer cabinets. How many bookcases and five drawer cabinets are sold? Make a cuboid with a volume of 60 cubic decimeters. The bottom is 4 decimeters long and 3 decimeters wide. How many decimeters high should it be? Dongxiang agricultural machinery plant has 39 tons of coal, which has been burned for 16 days, with an average of 1.2 tons per day. If the rest is less than 1.1 tons per day, how many days can it be reduced? The above problems are solved by equations_ ∩) O... Ha ha
• 4. 1. The bottom of a triangle is fixed, and its height is proportional to its area 2. Judgment questions ① If y = 7x (XY is not 0), then x is proportional to y ② A non-zero natural number is inversely proportional to its reciprocal ③ The height of a cylinder is inversely proportional to its volume ④ The distance is proportional to the speed ⑤ The number of copies of juvenile intelligence development newspaper is in direct proportion to the amount of money used ⑥ The number of attendances is inversely proportional to the number of absentees ⑦ If 2A = 3bab is not equal to 0, then B: a = 2:3 3、 Fill in the blank with the serial number 1. The area of a parallelogram is fixed, and its base and height () In proportion, in inverse proportion, out of proportion 2. Below is () Diameter area circumference ratio 3. The sum and difference of the subtracted () In proportion, in inverse proportion, out of proportion
• 5. What do fractions multiply integers and fractions multiply fractions have in common
• 6. Does integer multiply fraction, decimal multiply fraction and fraction multiply fraction have the same meaning
• 7. The practical problems of multiplying fractions by integers More than 20
• 8. Score by score oral arithmetic questions and answers, do not have no answer and score by integer, more than 80 (try to be more) There should be answers
• 9. 1,2,4,8… It can be expressed by the formula containing n
• 10. A, B, C, D four players in badminton competition, every two players have to play a game, now a has played three games, B has played two games, D has played one game, then C has played______ Field
• 11. Simple calculation, the process of calculation, because it is a recursive equation 10 of 27 x 18 x 5 of 3, 11 of 13 x 11 of 26 + 2 of 13 6:5x15:8 × 4:3:13:7x4 + 13:6x4 (7 / 18 + 5 / 9) x 35 / 27 99 x 100 / 1
• 12. How to understand the chapter of sixth grade mathematics fraction multiplication
• 13. >What is the meaning of fractional multiplication_ Please tell me the lesson plan of "final review"
• 14. >Can you tell me the meaning of the expression of fraction multiplied by integer_ Mathematics of grade 6: teaching plan of sorting out and reviewing fractional multiplication
• 15. How to do the tenth question of the sixth grade mathematics exercise 8 in Southwest Normal University? The diameter of the round high-altitude swivel chair in the amusement park is 10 meters. If a hanging basket is installed every 3.1 meters, how many hanging baskets can be installed? It's Southwest Normal University Press! Hee hee!
• 16. 4 14 64
• 17. What's the answer to the rule of primary school mathematics on page 46 of Jiangsu Education Press? How to write it? I haven't thought of it for half a century. One head is bigger than two. I feel dizzy
• 18. A factory completed 75% of the plan in the first half of the month and half of the plan in the second half of the month, increasing production this month () A 25% B 45% C 30% D 20% There are five teachers in the grade. When there are () students, the two schemes cost the same amount of money. When there are () students, choose scheme 1 to save money. When there are () students, choose scheme 2 to save money
• 19. There are four numbers, and any three of them add up to get 20, 27, 24 and 22 respectively. What are the four numbers
• 20. There are four numbers, three of which are added each time, and the sum is 22, 24, 27 and 20 respectively? The sum of two numbers is 6820. One of the addends has zero bits and ten bits are not zero. The other has zero bits and ten bits. If you remove zero, the two addends are the same. What are the two numbers?