Help me find a set of sixth grade midterm papers, a little harder

I'd love to help you, but I'm only 5 years old

It's good to buy Huanggang's rolls in the sixth grade. Huanggang Examination Paper is a book published by Fujian Education Publishing House in 2003, and the author is Huanggang Examination Paper Society.

The questions in the Huanggang test paper are close to the college entrance examination, and the question type is classic and to the point. If you have the basic knowledge and apply it flexibly, it will be very advantageous for the college entrance examination!

Features: The Huanggang area has always had a tradition of attaching importance to education, and the basic knowledge of students is very solid, and importantly, the International Mathematical Olympiad.

Huanggang students are indispensable every time, and Huanggang students are indispensable on the night of winning gold medals.

All excellent papers, practice every day, excellent + test papers, Huanggang 360 sunshine classmates, Dianzhongdian, Huanggang synchronous training These questions are good, and you can optionally buy some for your child.

According to the title, Serie A does 1 12, B 1 15, C 1 18 per hour, so a total of one hour to complete the whole project of (1 12 1 15 + 1 18) 37 180

So after five rounds to complete 185 180, the comparison shows that C is doing it at this time, so it takes 3*5 15 hours.

According to the meaning of the title, A completes 1 12 of this work in one hour, B completes 1 15 of this work in one hour, and C completes 1 18 of this work in one hour, and according to the proposed order, 1 12 + 1 15 + 1 18 = 15 180 + 12 180 + 10 180 = 37 180 in 3 hours

If 5 3 hours (i.e. 12 hours) can complete 185 180 of this task, and C is the last of the three workers, and he can complete 10 180 of this work in one hour, it only takes hours.

1 12 + 1 15 + 1 18) x is less than or equal to 1 to get x equal to 4 and 8 45 The remaining A does more than 17 180 for one hour, B does more than 5 180 for one hour, and the rest C does half an hour, for a total of 6 hours and 30 minutes.

Dad's ** was published in a magazine, the manuscript fee is 2600 yuan, according to the tax law, the part exceeding 800 yuan will be paid at a rate of 20% for individual income tax, and after the tax is deducted, how much yuan does Dad get for the manuscript?

9. A cylindrical vase, with a bottom radius of 5 cm and a height of 20 cm, the outer packaging box of this vase is a rectangular carton, how many square centimeters of cardboard paper are needed to make such a package?

10. The volume of a cone is 314 cubic decimeters, and the diameter of the bottom surface is 10 decimeters, what is its height?

11. A grain station has three granaries, a granary accounts for 25% of the total amount of grain in storage, if 16 tons of grain are taken out from silo C and put into bin A, and tons are taken out and put into silo B, the amount of grain stored in the three granaries is equal, how many tons of grain are stored in this granary?

12. The pony crosses the bridge by bicycle, the bridge is 1500 meters long, the diameter of the bicycle tire is 5 decimeters, and it rotates 30 times per minute, how many minutes does it take to cross the bridge? (The number is kept as an integer).

13. Put a bronze (completely submerged in water) in a square glass sink with a bottom side length of 2 decimeters, and the water surface rises by 1 decimeter, (the glass is negligible in thickness).

1) What is the volume of this bronze?

2) If this piece of bronze were cast into a cylinder with a base diameter of 10 centimeters, how many centimeters would it be high? (The number is kept as an integer).

14. Xiao Gang's average score in mathematics in the first three times was 92 points, and the fourth time he scored 98 points, what was the average score of his four tests?

15. Guangming Primary School has 240 students, and the number of students in the experimental primary school is 20 times more than 18 times that of Guangming Primary School.

16. A and B are 225 kilometers apart, the fast train and the slow train depart from the two places at the same time, and travel opposite each other, the fast train travels 48 kilometers per hour, the slow train travels 42 kilometers per hour, how many hours does the fast train depart and the slow train meet?

17. The TV factory plans to produce 8,000 color TVs throughout the year, but 60% of the plan was completed in the first half of the year, and as a result, more than the first half of the year was completed, and how many more color TVs were actually produced than planned?

18. A science and technology book, read 15 pages per hour, read in 6 hours, if you read it 1 hour in advance, how many pages per hour on average? (Proportional solution).

19. The garment factory processed 6,000 pieces of children's clothing in April, which was 20% less than that in May.

20. There are 240 peach trees in the orchard, and the number of apple trees is 80% of the peach trees, and there are pear trees, how many pear trees and peach trees are there?

21. Two trains A and B depart from each other at the same time from 1050 kilometers apart, car A travels 80 kilometers per hour, and after an hour, the two trains are far from each other, how many kilometers does car B travel per hour?

22. The ratio of the amount of money A and B have in the bank is 5:3, because B later deposited 4,400 yuan, and the amount of money A saved is equivalent to 75% of B, how much money did A save?

Interim test volumes.

1. Fill in the blanks. (22 points in total).

1) Cubic meters (litre; 135 hours ( hours ( ) minutes.

2) If a14 = b 13 then a:b = (

3) In a ratio, two outer terms are reciprocal to each other, with one inner term being 20 and the other being (

4) The ratio of number A to number B is 5:7, and number A is more than number B ( ).

5) The volume of a cone is 18 cubic meters, and the volume of a cylinder of equal height is ( ).

6) The sum of the edges and lengths of a cube is 12 cm, and its surface area is ( ) and its volume is (

7) Two cylinders and cones of equal height with equal bottoms, the sum of their volumes is 24 cubic centimeters, where the volume of the cone is ( ) cubic centimeters.

8) On a map, the actual distance of 100 kilometers is represented by a 20 cm long line segment, and the scale of this map is ( ).

9) If 3a=4b, then a:b=( If x=35 y, then x:y=(

10) Determine whether the following two quantities are proportional, inversely proportional, or disproportionate.

The circumference and radius of the circle. （

The area and radius of the circle. （

The circumference and side length of the square. （

11) Statistical charts commonly used in daily life are ( ).

3. Distinguish between right and wrong. (Hit the right "" and the wrong hit "wrong") 1 point for each question, a total of 6 points).

1.Cut a cylinder into the largest cone, which is half the volume of the cut part. (

2.A cylinder has an infinite number of strips high, and a cone has only one strip high. (

3.If the two related quantities are not directly proportional, they are inversely proportional. （

4.Bar charts make it clear how quantities are increasing or decreasing. (

5.The antecedent term of the ratio is certain, and the latter term of the ratio is inversely proportional to the ratio. （

6.To reflect the temperature changes during the week, it is best to draw a bar chart. （

Fourth, according to the requirements of the calculation. (28 points in total).

1.Write directly to the number. (8 points).

2.Find the unknown x: (8 points).

x+16 x=7 80×34 －14 x=16 58 :x=34 ：6 1－14 x =34

3.Off-line calculations. (If you can make a simple calculation, you should make a simple calculation) (8 points).

4.Column equation answer: (4 points).

1) The difference between 7 times and 34 of a number is 14, find this number.

2) 12 plus a number of 67, and is 18, what is this number?

7. Ingenious solutions. (8 points per question, 16 points in total).

1.On a map with a scale of 1:500,000, what is the measured distance between two places in centimeters, and what is the actual distance between the two places?

2.A conical pile of sand, with a height of meters and a bottom radius of 5 meters, weighs about tons per cubic meter of sand. How many tons does this pile of sand weigh? (The number is reserved for whole tons).

Wang Lan and Lili entered a manuscript, Wang Lan entered 35 pages, and Lili entered 45 pages. Three-sevenths remained unrecorded. How many pages is there in this manuscript?

There are (35+45) (1-3 7)=80 (4 7)=140 pages.

My uncle's family had a per capita income of 800 yuan last year, one-fifth less than this year, and one-tenth less than last year.

What was the per capita income of my uncle's family in the year before last?

The per capita income of the previous year = 800 (1-1 10) = 800 9 10 = 720 yuan.

What is the per capita income of my uncle's family this year?

This year's income is 800 (1-1 5) = 800 (4 5) = 1000 yuan.

A project needs 5 hours to do alone, B to do it alone for 6 hours, A and B cooperate for 2 hours, A has another task, and B continues to complete it, how much time will B take to complete the task?

A and B cooperate 2 to complete (1 5 + 1 6) 2 = 22 30

Then B also needs (1-22 30) (1 6) = 8 5 = hours.

Xiao Ming's family harvested a total of 360kg of corn and sorghum this year, of which corn accounted for four-fifths of the sorghum.

Sorghum harvested 360 (1 + 4 5) = 360 (9 5) = 200 kg.

Corn harvested 360-200 = 160 kg.

Speed ratio: passenger car: truck = 7:6

Truck speed: 56 7x6=48 (km/h).

The distance between A and B is wide: 48x9=432 (km).