Primary School 2008 Primary School Graduation Class Mathematics Test Paper (Students: Every math test is an interesting mathematical journey, and today is no exception. As long as you review the questions carefully, think carefully, and write neatly, I believe you will Achieve excellent results. I wish you success, OK!) 1. Fill in the "check box" carefully. (24 points, 2 points for each question) 1. Seven billion seven thousand seven hundred and seventy thousand and seventy is written as ( ), omitting the "billion", the mantissa is about ( ) billion. 2. The 4 on the right side of 400.04 is in the ( ) position, which means ( ) ( ). 3. 6÷20＝（　）÷10＝=（　）＝（　）Fill in the decimals 4. Use letters to express the distributive law of multiplication. 5. A right angle = a right angle = a circumferential angle 6. 3 hours and 20 minutes = ( ) hours 2 tons = ( ) kilograms 7.: After simplifying the ratio, it is , and the ratio is . 8. A ton of cement was used on the construction site, which is 3 tons less than the remaining amount. Use a formula containing letters to indicate the tonnage of the original cement on the construction site is tons. 9. A watch factory originally planned to produce 1,000 watches in 25 days, but actually produced 50 watches per day. The task was actually completed in 1 day. 10. Su Li’s average score in the three subjects of Chinese, mathematics, and science last semester was 92 points. He had to take the English test to get an average score of 94 points in the four subjects. 11. Naughty is reading a book. I read the whole book on the first day, and 25 of the whole book on the second day. There are 25 pages left. This storybook has pages. 12. A cylindrical steel bar is 2 meters long. If it is cut into two sections, the surface area increases by 6 square decimeters. The volume of this steel bar is cubic meters. 2. "Select the best" and choose carefully. (5 points) 1. A product is sold at a 40% discount, which means ( ). 〔①The original price is 60 of the current price; ②The current price is 60 of the original price; ③The current price is 40 of the original price] 2. The number of female students in Class 2, sixth grade, accounts for the whole class, and the ratio of female students to male students is ( ). 〔①2﹕3; ②3﹕2; ③5﹕2] 3. Cut a cube with an edge length of a meter into two cuboids. The surface area of ??these two cuboids is ( ) square meters. 〔①6a2; ②8a2; ③12a2] 4. Fold a piece of paper with a thickness of 0.1 mm in half, and then fold it in half again. After folding it 4 times, the paper will be ( ) mm thick. 〔①0.4; ②0.8; ③1.6; ④0.32] 5. A wooden strip is 9 cm long, and B wooden strip is as long as A wooden strip. Use three of these two kinds of wooden strips to form an isosceles triangle shape. , the perimeter of an isosceles triangle is ( ) centimeters. 〔①12.6; ②17.4; ③22.2; ④27] 3. Get rid of the disease with "wonderful rejuvenation". (5 points) In math class, Teacher Wang asked students to use mathematical language to describe things in life. Please analyze it from a mathematical point of view and draw horizontal lines in the wrong places. Zhang Hong said: "It's really unlucky. I was born at 14:00 on February 29, 1992. I usually only celebrate my birthday once every four years." Su Wei said: "We often see scores like 3:0 in games, so the latter term of the ratio can be 0." Lin Qiao said: "The day before yesterday, four classmates and I took turns carrying two classmates who had sprained their ankles to a hospital 200 meters away. On average, each person carried 40 meters." Xiaoyu said: "The winning rate of a certain lottery ticket is 10. Every time you buy 100 lottery tickets, 10 of them will definitely win." Xiaohua said, "Last time my dad wanted to make a cylindrical ventilation pipe with a diameter of 0.3 meters and a length of 3 meters. I suggested that if you don't count the joint consumables, you should buy at least a rectangular iron sheet with an area of ??2.8 square meters." 4. "Magical calculation" clever, quick and right. (37 points) 1. Fill in the number directly. (10 points) 2.4÷80＝ 0.25×8＝30÷30＝ 0.3×0.3＝ 7÷1.4＝ ×＝ 12÷＝ ×56＝ －＝ ＝ 2. Off-form calculation.

(Friendly reminder: some calculations can be simplified) (18 points) 4000-3456÷32×5 3.68-3.6×0.2 0.18 48×9.9 48×0.1 (1-)÷0.25×4 (6-6×)÷12 2 ÷[(-)] 3. Solve the equation. (Warm reminder: Pay attention to the writing format!) (6 points) = X: 2=0.25﹕X＋3X=2.4 4. Text questions. (3 points) (1) 3 times a number is 0.1 less than 16. What is this number? (Use equations to solve) 5. Hands-on practice is really fun. (3 points) First draw the height of the bottom edge of the picture below, then measure the required data (round up to centimeters) and find its area. Bottom 6. Careful observation is very practical. (3 points) Below is a statistical table of Xiaoli’s meter readings at the end of the first four months of this year. Answer the following questions based on the table. Month 1, 2, 3 and 4 readings (degrees) …… 1035 1100 1155 …… (Friendly reminder: this month’s electricity consumption = this month’s meter reading – last month’s meter reading) 1. Xiaoli’s electricity consumption in February; 2. If The electricity charge is 0.45 yuan per kilowatt hour, and Xiaoli's family has to pay the electricity bill in March; 3. The electricity consumption in April increased by 20 yuan compared with March. Fill in the meter reading in April in the form. 7. I can solve problems. (23 points) 1. Teacher Li deposits 8,000 yuan in the bank for three years, with an annual interest rate of 2.25 and deducting the interest tax of 20. How much yuan can he receive in interest after maturity? (4 points) 2. Xiao Ming said that he is 3 years younger than his grandfather this year. It is known that Xiao Ming is 15 years old this year. How old is his grandfather? (Solution of equations) (4 points) 3. Class 6 (1) is divided into three groups A, B, and C to participate in tree planting activities. The number of people in group A accounts for the number of people in the whole class. If 2 people are transferred from group C to group A, the three groups The number of students is exactly equal. How many students are there in the class? (5 points) 4. The picture below is a cylindrical cake box (unit: cm). Put a trademark on the side of it. What is the minimum area of ??the trademark? (5 points) 5. For the health and safety of children, the experimental kindergarten provides each child with a water cup. Each water cup costs 3 yuan, and Ansheng Supermarket has a 10% discount, while Xinhuadu Supermarket offers "buy eight and get one free". The kindergarten wants to buy 180 water cups. Please be your "consultant" and calculate which store is more cost-effective. Please write down your reasons. (5 points)

1. Fill in the blanks 1. (1 1/2) × (1 1/4) × (1 1/6) × (1 1/8) × (1 1/3 ) × (1 1/5) × (1 1/7) × (1 1/9) = ( ) 2. If it is specified that a*b=5×a-1/2×b, where ab is a natural number, then 10 *6= ( ) 3. Fill in two adjacent integers in the following boxes to make the inequality true□ <1 1/2 1/3 1/4 1/5 1/6 1/7 1/8 1/9 1/10＜□ 4. For a simplest fraction, divide its numerator by 2 and multiply its denominator by 3. After simplification, we get 3/29. This simplest fraction is ( ) 5. 5 times a number, add 2 Subtract 10 and multiply by 2 to get 44, then this number is ( ). 6. The figure shows a sector with a central angle of 45 degrees. The right-angled side of an isosceles right triangle is 6 cm. The area of ??the shaded part is ( ) square centimeters. 7. There are two cylindrical oil barrels. The shapes are similar (that is, the ratio of the ground radius to the height is the same), and the dimensions are as shown in the figure. Both oil barrels are filled with oil. If the smaller one holds 2 kilograms, then the larger one holds ( ) kilograms of oil. 8. The area of ??the same part of the three circles, large, medium and small, is 1/10 of the area of ??the large circle, so that the area of ??the middle circle is 1/6 and the area of ??the small circle is 1/2, then the area ratio of the three circles is ( ). 9. There are only two questions in a math test. As a result, 10 people in the class got all the answers right. 25 people got the first question right, and 18 people got the second question wrong. Then there are ( ) people who got both questions wrong.

10. For a project, it takes 14 days for A to do it alone, 7 days for team B to do it alone, and 6 days for team C to do it alone. Now after teams B and C have cooperated for 3 days, team A will do the rest alone, and it will take ( ) days to complete. 2. Multiple choice questions 1. One key can only open one lock. Now there are 4 keys. But I don’t know which key opens which lock. It takes at most () attempts to open all locks. A, 16 B, 12 C, 10 D, 6 2. Among the integers from 1 to 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 a simplest fraction. The product of their numerator and denominator is 140. If all the selected fractions are arranged from small to large, then the third fraction is ( ) A. 4/35 B. 7/20 C5/28 4. The ratio of 3/4:3/20 is ( ). A, 5 B, 1:5 C, 5:1 D, 9/80 3. Solve the problem 1. After five referees scored a gymnast, they removed the highest score and the lowest score, and the average score was 9.85 points; only If the highest score is removed, the average score is 9.46 points; if only the lowest score is removed, the average score is 9.66 points. How many points does this athlete's highest score differ from his lowest score? 2. Write 210 as the sum of 7 natural numbers, so that when these 7 numbers are arranged in a row from small to large, the difference between two adjacent numbers is 5. What are the first number and the seventh number respectively? 3. A car drives from point A to point B, traveling 750 meters per minute, and is expected to arrive in 50 minutes. But when the car was traveling 3/5 of the way, it broke down and it took 5 minutes to repair it. If it still needs to reach point B within the scheduled time, how many meters faster per minute must the car travel than before during the remaining distance? 4. Xinxin Trading Service Company charges a service fee of 3% for selling goods to customers. A service fee of 2 is charged for purchasing items on behalf of customers. Today, a customer entrusted the customer to sell certain self-produced items and purchase new equipment on his behalf. It is known that the company deducted a customer service fee of 264 yuan, and the customer just broke even. How much did the new equipment cost (price)?