20 1 1 xiaoshengchu mathematics examination paper. Txt Laozi's fooling children is called education, while children's fooling Laozi is called deception, and mutual fooling is called generation gap. ▲ Man, what color should I use to attract you? 1. If a*b=5×a- 1/2×b is specified, where a and b are natural numbers,/10 * 6 = _ _ _ _ _ _ _ _ 2. A simplest fraction, its numerator is divided by 2, denominator is multiplied by 3, and 3/29 is obtained after simplification. This simplest fraction is _ _ _ _ _ _ _ _. 3. As shown in the figure, at this time, a sector with a central angle of 45, in which the right side of the isosceles triangle is 6 cm and the area of the shaded part is _ _ _ _ _ square cm. 4. There are only two questions in a math exam. As a result, the whole class 10 people are all right, the first question has 25 people right, and the second question has 18 people wrong, so the people who are wrong in both questions are _ _ _ _ _ _. 5. It takes 14 days to complete a project, 7 days for Team B and 6 days for Team C. Now Team B and Team C have worked together for three days, and Team A will need _ _ _ _ _ _ days to complete the task. 6. Among the integers from1to 2000, there are _ _ _ _ _ _ _ numbers that are multiples of 3, but not multiples of 5. 7. A string of beads is made of 8 red and 2 black in turn into a circle ***40 capsules. A cricket jumps from the second black bead, and every time it jumps over six beads, it falls on the next one, and it must jump at least _ _ _ _ _ _ times before it falls on the black bead again. 8. The natural number n has many factors. Sum these factors in pairs to get a new set of numbers, the smallest of which is 4, the largest is 196, and n has _ _ _ _ _ _ _ factors. 9. There are two ants A and B on the two vertices of a square wooden frame ABCD with a side length of 1 m, crawling counterclockwise along the wooden frame, as shown in the figure. 10 seconds later, the distance between Party A and Party B is the same. After 30 seconds, the distance between A and B is the same again. It takes _ _ _ _ _ _ seconds for an ant to crawl along the wooden frame and _ _ _ _ _ _ seconds for a B ant to crawl along the wooden frame. 10. A car travels from place A to place B at a speed of 750 meters per minute and is expected to arrive in 50 minutes. But the car broke down after driving for 3/5 miles. It took five minutes to repair it. If we still need to get to B within the scheduled time, how many meters per minute must the car be faster than before? 1 1. xinxin business service company charges 3% service fee for customers to sell goods and 2% service fee for customers to shop. Today, a customer entrusted the company 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? 12. Party A and Party B can complete a project within 8 days. A it takes one person 12 days. Now that two people have worked together for a few days, the rest of the project will be completed by B alone, so the time ratio of the first two paragraphs of B is 1:3. How many days is the actual duration of this project?

2. The circumference of the cylinder bottom is 3 1.4 decimeter, and the height is 10 decimeter. Its lateral area is (), its surface area is (), its volume is (), and the volume of a cone with equal bottom and equal height is ().

003. 40% of 15 tons is () tons, and15 tons is more than ()%.

004. It is known that 3 times of a number is equal to 4 times of b number, and the ratio of a number to b number is (), and the ratio is ().

005. Expand one side of the cylinder to get a rectangle. The length of rectangle is equal to the length of cylinder (), the width is equal to the width of cylinder (), and the side area of cylinder is equal to the side area of cylinder ().

006. Uncle Wang produced 200 parts, three of which were unqualified, and the qualified rate of the parts produced by Uncle Wang was ()%.

007. The radius ratio of the big circle and the small circle is 3: 2, the diameter ratio is () and the area ratio is ().

008. The volume of a cube with a side length of 6 decimeters is equal to the volume of a cylinder with a bottom area of 18 square decimeter, and the height of the cylinder is () decimeter.

009. Draw a circular lawn on the floor plan with the scale of 1: 2000 and the radius of 3 cm. The actual radius of this circular lawn is () meters.

00 seconds, true or false (tick right, X means wrong). (5 points)

00 1. The volume of the cone is equal to the volume of the cylinder. ( )

The radius of a circle is out of proportion to its area. ( )

003. The side length of a square is proportional to its area. ( )

004.4: 8 and 3: 9 can form a ratio. ( )

005. The ratio of A number to B number is 5: 3, so B number is 40% less than A number. ( )

Multiple choice questions (please put the serial number of the correct answer in brackets). (5 points)

00 1. To process cylindrical wood into the largest cone, the () of the cylinder must be cut off.

00 2. The number of parts produced is certain, the time to produce each part and the total time to produce this batch of parts ().

00A is proportional, B is inversely proportional, and C is not proportional.

003. Which of the following formulas indicates that X and Y are inversely proportional ()?

00A4x=yB=yCx+y=4

004. According to 3a=5b, it can be written as ().

00A3:a=5:b Ba:b=5:3Ca:b=3:5

005. If the distance of 3 cm on the graph indicates that the actual distance is 1.5 mm, then the scale of this graph is ().

00( 1) 1:20 (2) 1:2 (3)20: 1