Mathematics Examination Paper for Primary School Graduation Class in 2008 (Students: Every math exam is an interesting math trip, and today is no exception. As long as you carefully examine the questions, think hard and write neatly, I believe you will get excellent results. I wish you success, ok! First of all, fill in "check-in" carefully. (24 points, 2 points for each small question) 1, 7,070,700,700 writing (), and the mantissa after omitting "billion" is about () billion. 2. In 400.04, the right 4 is in the position of (), which means () (). 3. 6 ÷ 20 = () ÷ 10 = ()% = () Fill in the decimal 4. The distribution law of multiplication expressed by letters is as follows. 5. A straight angle = a right angle = a rounded corner 6, 3: 20 = () When 2 tons = () kg 7, the simplified ratio is. 8. One ton of cement was used in the construction site, 3 tons less than the rest. The formula with letters indicates that the tonnage of raw cement on the site is tons. 9. A watch factory originally planned to produce 65,438+0,000 watches in 25 days, but actually produced 50 watches every day, and actually completed the task on the same day. 10, the average score of Chinese, mathematics and science in Su Li last semester was 92, and English has to be scored, so the average score of four subjects can reach 94. 1 1, naughty reading, reading the whole book on the first day, reading 25% of the whole book the next day, leaving 25 pages unfinished. This story book has 50 pages. 12. A cylindrical steel bar is 2 meters long. Cut it into two sections, and the surface area is increased by 6 square decimeters. The volume of this steel bar is cubic meters. Second, "choosing the best among the best" is a careful selection. (5 points) 1, a commodity is sold at a 60% discount, indicating (). (1) The original price is 60% of the current price; ② The current price is 60% of the original price; (3) The current price is 40% of the original price. (2) If girls in Class Two, Grade Six, account for the whole class, the ratio of girls to boys is (). 〔①2﹕3; ②3﹕2; ③ 5: 2] 3. Cut a cube with a side length of one meter into two cuboids at will, and the surface area of these two cuboids is () square meters. の①6a 2； ②8 a2； ③ 12a2] 4。 Fold a piece of paper with a thickness of 0. 1mm in half, and then fold it in half. After folding it four times, the paper will be () mm thick. 〔①0.4; ②0.8; ③ 1.6; ④ 0.32] 5. The length of batten nail is 9 cm, and the length of batten B is batten nail. Use three of these two pieces of wood to form an isosceles triangle, and the circumference of the isosceles triangle is () cm. 〔① 12.6; ② 17.4; ③22.2; ④ 27] Third, "rejuvenation with wonderful hands" can cure diseases. (5 points) In math class, Mr. Wang asked students to describe things in life in mathematical language. Please analyze it mathematically and draw a horizontal line in the wrong place. Zhang Hong said, "It's a pity that I was born in 1992 on the afternoon of February 29th, and I usually have my birthday only once every four years." . Su Wei said: "The score of 3: 0 is often seen in the game, so the latter item of the game can be 0." . Qiao Lin said: "The day before yesterday, four classmates and I took turns to carry our sprained classmate to the hospital 200 meters away, with an average distance of 40 meters." Xiaoyu said: "The winning rate of a lottery ticket is 10%. Every time you buy 100 lottery tickets, you will definitely win 10 lottery tickets. " Xiaohua said, "Last time my father wanted to make a cylindrical ventilation pipe with a diameter of 0.3 meters and a length of 3 meters, I suggested buying at least a rectangular iron sheet with an area of 2.8 square meters, excluding connector consumables." Fourth, "clever calculation" is clever, fast and correct. (37 points) 1, fill in the number directly. (10) 2.4 ÷ 80 = 0.25× 8 = 30 ÷ 30% = 0.3× 0.3 = 7 ÷1.4 =× =12 ÷ =× 56. Text questions. (3 points) (1) A number of three times is 0. 1 less than 16. What's this number? (solved by equation) 5. Hands-on practice is really interesting. (3 points) Draw the height at the bottom of the picture below, and then measure the required data (take the whole centimeter) to find out its area. Sixth, careful observation is very practical. (3 points) The following is the electricity meter reading statistics of Xiaoli's family at the end of this year1-April. Answer the following questions according to the table. I studied (degree) in January, 1234 ... 1 035100155 ... (Friendly reminder: electricity consumption this month = electricity meter reading this month-electricity meter reading last month)1,electricity consumption of Xiaoli's home in February; 2. If the charge per kilowatt-hour is 0.45 yuan, Xiaoli's family will pay the electricity bill in March; The electricity consumption in April increased by 20% compared with that in March. Fill in the meter reading in April. Seven, I can solve problems. (23 points) 1. Mr. Li deposited 8000 yuan in the bank for three years, with an annual interest rate of 2.25%. After deducting 20% interest tax, how much interest can he get back at maturity? (4 points) 2. Xiaoming said that he is three years younger than his grandfather this year. Xiao Ming is known to be 15 years old this year. How old is grandpa? (Equation solution) (4 points) Class 6 and Class 3 (1) are divided into three groups: A, B and C. If the number of students in Group A accounts for the whole class, if the number of students transferred from Group C to Group A is exactly equal. How many students are there in the class? (5 points) 4. The picture below shows a cylindrical cake box (unit: cm). Put a trademark on its side. What is the minimum area of the trademark? (5 points) 5. For the sake of children's health and safety, the experimental kindergarten provided each child with a water cup. 3 yuan offers a 10% discount on a water glass, and Xinhuadu Supermarket "buys eight and gets one free". Kindergarten wants to buy 180 cups. Please be a "staff officer" and figure out which is more cost-effective. Please write down your reasons. (5 points)

1. Fill in the blanks 1, (1+1/2) × (1+1/4 )× (1+6 )× (/kloc-6) 5) × (1+1/7 )× (1+1/9) = () 2. If a*b=5×a- 1/2×b, where ab is a natural number. Make the inequality □ <1+1/2+1/3+1/4+1/5+1/6+1/7+/kloc. The simplest score is () 5, five times a number, plus 2 minus 10, multiplied by 2 to get 44, then this number is (). 6. The figure shows a sector with a central angle of 45 degrees, in which the right side of the isosceles right triangle is 6 cm and the shaded area is () square cm. 7. There are two cylindrical oil drums. Similar in shape (that is, the ratio of ground radius to height is the same), and the size is as shown in the figure. Both oil drums are full of oil. If the small one holds 2 kilograms, then the big one holds () kilograms of oil. 8. The area of the same part of three circles * * * is110, so the area of the middle circle is 1/6 and the area of the small circle is 1/2, so the area ratio of the three circles is (). 9. There are only two questions in the math exam. Results The whole class 10 was all right, the first question was 25 right, and the second question 18 wrong. Then someone () got both questions wrong. 10. A project needs to be done by Party A alone 14 days, 7 days for Team B and 6 days for Team C. Now after three days of cooperation between Team B and Team C, the rest will be completed by Team A alone, and it will take () days to complete. Second, the multiple-choice question 1, a key can only open one lock, and now there are four keys. But I don't know which key to open which lock. You have to try () times at most to open all the locks. In a, 16 B, 12 C, 10 D, 6 2, integer 1-2000, there are () numbers that are multiples of 3 but not multiples of 5. a，532 B，533 C，534 D，535 3。 There is the simplest fraction whose product of numerator and denominator is 140. If all the selected scores are arranged from small to large, then the third score is () A, 4/35 B, 7/20 C5/28 4, 3/4:. a，5 B， 1: 5 c，5: 1 d，9/80 III。 Solving the problem 1. After five judges graded a gymnast, one of the highest scores and one of the lowest scores were removed, and the average score was 9.85. Only one highest score was removed, with an average score of 9.46; Only one lowest score was removed, with an average score of 9.66. What is the difference between the highest score and the lowest score of an athlete? 2. Write 2 10 as the sum of seven natural numbers, so that after seven numbers are arranged in a row from small to large, the difference between two adjacent numbers is 5. What are the first and seventh numbers? 3. A car travels from A to B at a speed of 750m per minute, and it is expected to arrive in 50 minutes. However, when the car traveled to 3/5 distance, it broke down and was repaired within 5 minutes. If we still need to get to B within the scheduled time, how many meters per minute must the bus go faster than before for the rest of the trip? 4. Xinxin Business Service Company charges 3% service fee for the goods sold by customers. 2% service charge for shopping on behalf of customers. Today, a customer entrusts a customer to sell some self-produced goods and buy new equipment. Knowing that the company deducted the customer service fee of 264 yuan, the customer just broke even. What is the cost (price) of buying new equipment?