How to do the knowledge and skills of exercise 1.2

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1. Knowledge, ability and training of Mathematics (Grade 6) 1. Xiaogang rode a bicycle. It took 0.6 hours to travel 12 kilometers. The ratio of distance to time is () 2. The circumference of a rectangle is 50 meters, and the ratio of length to width is 3:2. The length of the rectangle is () meters 3. The ratio of Mingming and Liangliang stamps is 2:5. Liangliang has 105 stamps and Mingming has () stamps 4. The ratio of number a to number B is 4:5. Number a is a fraction of number B, and number B is a fraction of the sum of number a and number B 5. 20% off a book is 16 yuan. The original price of this book is () yuan
2. Mathematics knowledge and ability training 8 pages
3. Knowledge and ability training of grade 6 A rectangular glass fiber reinforced plastic container with a bottom area of 96 square centimeters and a height of 10 centimeters contains 5 centimeters of water. Now put an iron bead into the water, and the water surface rises by 2 centimeters. What's the volume of the iron bead? At least a few such iron beads should be put before the water overflows the glass container? The teacher said it was about three!
4. 2001 out of 2002 times 2003 It's the easiest
5. In a division formula, if the sum of the product of division and quotient plus the divisor is 32.8, and the quotient is the smallest sum, what is the divisor? What is the divisor?
6. Requirements: four operations, must have scores, preferably with brackets It's hard! There are more than three steps, and there are simple operations. But the answer should be better, The answer should not have negative numbers and too many circular decimals Don't fool people by copying from the Internet
7. Simple calculation of 1003 × 996 grade 6 mathematics
8. Sixth grade mathematics: fraction mixing, simple operation. Very urgent! It's going to be used tonight! Could you hurry up, please? 1/7×6/13+8/13×1/7=? 2-5/11÷9/22-5/9=? （5/6-3/4）÷5/12+9/5=? Write out the process ~ ~ online waiting, thanks!
9. Please write down all the answers in the first volume of the fourth grade mathematics exercise book. Thank you!
10. Fourth grade volume I mathematics exercise book page 23 answers
11. The second question on page 12 of knowledge and skills The sum of the three internal angles of a triangle is 180 degrees. If the first angle of the triangle is three times the second angle, and the third angle is 15 degrees larger than the second angle, then (1) What's the second angle? (2) What are the other two angles? There should be a process, more detailed, thank you
12. Knowledge and skill questions 1 and 2 (to process) in mathematics book p73, Volume 2, Grade 7 Question: as shown in the figure AB, the parallel CD angle a is equal to 45 degrees, the angle D is equal to the angle c, and the degree of the angle c and the angle B in turn
13. Mathematics knowledge and ability training of grade 6 Volume 1 answers on page 52 (Jiangsu Education Edition) For a barrel of oil, one fourth of the whole barrel of oil was used for the first time, and one fifth of the whole barrel of oil was used for the second time. For the first time, 2 kg more than the second time. How many kg did the barrel of oil weigh? If it is right, I will give 10 points!
14. The formula and knowledge of cone and cylinder
15. Answers to the final self-test of grade 6 mathematics volume 2 (knowledge and ability training) from page 70 to 74 of Jiangsu Education Press Thank you! 1: In 2008, the 29th Olympic Games was held in Beijing. The building area of the main venue of the Olympic Games is 2.580300 square meters. This number is written as () square meters, which is rewritten as () ten thousand square meters. 2: 80: () = four fifths = () 25 = () percent = () (fill in decimal) 3: It is known that the ratio of medicine to water is 1:200 when 0.8kg of liquid medicine is used to prepare liquid medicine, and () kg of water needs to be prepared. 4: Of the three numbers of 2.05, 25% and 3 / 4, the smallest number is (), and the largest number is (). 5: Uncle Li has cultivated 500 seeds this year, 480 of which have germinated. The germination rate of these seeds is (). 6: The surface area of a cube block with an edge length of 6 decimeters is () square decimeters. Cut it into the largest cylinder with a volume of () cubic decimeters. 7: Statistical chart () should be selected to calculate the change of daily average temperature in a week. 8: The acute angle of a right triangle is 20 ° and the other is (); the apex angle of an isosceles triangle is 130 ° and its base angle is () 9: 3 tons 25 kg = () kg 2.45 hours = () minutes 7 liters 50 ml = () cubic decimeters 44000 square meters = () hectares 10: Given that a = 2 × 3 × 5, B = 2 × 3 × 3, the greatest common divisor of a and B is () and the least common multiple is ().
16. Fill in the integer or decimal in the line below and the fraction in the line above
17. Solving a simple sixth grade math problem The new community has built a rectangular swimming pool at one end of an 80 meter long rectangular field. The rest of the field is just a square. How many meters is the perimeter of the swimming pool? Please write down the process! This is a very simple problem, but I just can't do it. I always feel that there are few conditions
18. The operation of numbers Car a and car B drive from two cities 600 kilometers apart. Car a travels 65 kilometers per hour. Car B's speed is 11 / 13 of car a's. how many hours later do the two cars meet?
19. Seeking 200 simple score calculation questions in Volume 1 of grade 6 I want to calculate the score!
20. Who give me 200 calculation questions, grade six more points, I give all points Don't spray me,