1, a number, which is 9 in a million miles, 7 in a million miles, 5 in a hundred thousand miles and a thousand miles, and everything else is 0. This number is written as (), read as (), rewritten as a number () in units of ten thousand, and the mantissa after omitting ten thousand is () ten thousand.
2. Move the decimal point of 4.87 three places to the left and two places to the right, and this number is ().
3.9.5607 is the decimal place of (), with one decimal place about () and two decimal places about ().
4. The smallest odd number is (), the smallest prime number is (), the smallest composite number is (), both prime numbers and even numbers are (), and the largest prime number within 20 is ().
5. Because a=2×3×7 and b=2×3×3×5, the greatest common factor of A and B is () and the smallest common multiple is ().
6, x and y are natural numbers, x÷y=3(y≠0), the greatest common factor of x and y is (), and the smallest common multiple is ().
7. If x6 is a false score, x7 is a true score, and x= ().
8. If the number of A is expanded by 10 times, which is equal to the number of B, and the sum of A and B is 22, then the number of A is ().
9. The sum of three consecutive even numbers is 72, which are (), () and () respectively.
1 1, a number, which is the smallest prime number in thousands, the smallest natural number in hundreds, the smallest composite number in units, the largest number in percentiles, and the number in other digits is 0. This number is written as () and read as ().
12, the unit of the score is 18, the maximum true score is (), and at least () such score units are added to make a false score.
13 and 0.045 have 45 ().
14. Divide a 5-meter-long iron wire into 8 segments on average, each segment is () of this iron wire, and each segment is () meters long.
15, and the unit of the score is 1 1 1. The sum of the maximum true score and the minimum false score is ().
16, A and B are prime numbers, their greatest common factor is (), and their least common multiple is ().
17, Xiaohong has a pencil, and each pencil is 0.2 yuan, so a pencil costs * * * yuan.
18, warehouse a 34 and warehouse b 23 are equal, warehouse a: warehouse b = (): (). It is known that two warehouses have 360 tons of grain, warehouse A has () tons of grain and warehouse B has () tons of grain.
19, if 7x=8y, then x: y = (): ().
20. The radius of the big circle is 8 cm, and the diameter of the small circle is 6 cm. Then the perimeter ratio of the big circle and the small circle is (), and the area ratio of the small circle and the big circle is ().
2 1, put 5g of salt into 50g of water, and the ratio of salt to brine is ().
22. Using the 24-hour clock method, 3 pm is (), evening 1 1 is (), and evening 12 is ().
23. A store is open from 9:00- 18:00 every day, and it is open for () hours all day.
24.15m40cm = () m = () cm6400ml = () l = () cubic decimeter.
5.4 square kilometers = () hectares = () square meters 3 hours and 45 minutes = () hours.
834 cubic meters = () cubic decimeter 1 cubic meter 50 cubic decimeter = () cubic meter
3 tons 500 kg = () kg 1.5 l = () ml = () cubic centimeter.
3.25km = () km () m 0.65m = () decimeter () cm.
25. The volume of a cylinder is 60 cubic centimeters, and the volume of a cone with the same height as its bottom surface is () cubic centimeters.
26. A rectangular body is 8 cm long, 5 cm high and 48 cm square at the bottom, so the volume of this cuboid is ().
27. Draw a circle with a compass with a circumference of 9.42 cm. The distance between the two feet of a compass is () cm, and the area of this circle is () cm 2.
28. The radius of a circle is enlarged by 3 times, and the enlarged perimeter () area is ().
29. When the perimeters of rectangles, squares and circles are equal, the area of () is larger.
30. Put two cubes with a side length of 3 cm together to form a cuboid. The surface area of this cuboid is () and the volume is ().
3 1, the side of the cylinder is expanded, and a () shape is obtained. Its length is equal to the cylinder () and its width is equal to the cylinder ().
32. A cylinder has a radius of 2cm at the bottom and a height of 12cm. The side area of this cylinder is () square centimeters and the volume is () cubic centimeters.
33. The volume of cylindrical steel is 882 cubic decimeters, the bottom area is 42 square decimeters, and the height is () meters.
34. Saw a 3-meter-long cylindrical wood with a bottom radius of 5 cm into two sections to increase the surface area by () square centimeters.
35. Expand one side of the cylinder to get a square. The radius of the bottom of the cylinder is 0.5 decimeter, and the height of the cylinder is () decimeter.
36. If the height of a cylinder is shortened by 6 centimeters, the surface area will be reduced by 75.36 square centimeters and the volume will be reduced by () cubic centimeters.
37. The radius of the big circle is twice that of the small circle, the area of the big circle is more than that of the small circle 12 square meters, and the area of the small circle is () square meters.
38. The volume of a cylinder is equal to the volume of a cone with equal bottom and equal height. The height of the cone is 12 cm, and the height of the cylinder is () cm.
39. Cut a cube with a side length of 3 decimeters into the largest cone with a volume of () cubic decimeter.
40. On the map with the scale of 1: 1250000, the distance between the two cities is 8 cm. If drawn on a map with the scale of 1: 8000000, the distance on the map is () cm.
4 1. In proportion, the two external terms are reciprocal, one is 6 17 and the other is ().
42. The diameter of the wheel is certain, and the distance traveled is directly proportional to the number of revolutions of the wheel.
43. The freight of cars A and B is *** 100 tons, in which car A 14 is equal to car B 16, car A freight () tons and car B freight () tons.
44.A is 60% of B, and A: B = (): ().
45, 1 kg of sugar, 58 is () kg, and the rest is 1 kg of sugar ().
46、8÷( )=( ):4=0.25=3( ) =( )%=( )
9 15 =( )÷45=3:( )=( )%= () (fill in decimal places)
10÷( )=62.5%= 15( ) =( )8
47. It takes 20 minutes for a water pipe to be sawed into 5 sections, and () minutes for a water pipe to be sawed into 10 section.
48. Cut 3 knives on a 5-meter-long rope so that each section is equal in length, each section is () meters long and each section is () meters long.
49 and 32 meters are () meters after increasing its 18, and () meters after decreasing 18.
50. The volume ratio of two cylinders and cones with the same height and the ratio of bottom radius of 1: 2 is ().
5 1, at 72.5%, 79, 0.7255, 0.725 (. . ), the largest number is (), and the least number is ().
52, with 10.28 cm wire into a semicircle, its area is () square centimeters.
53, 377%, 3.7 (.),33 10 ,3.707,3.7 1(。 . ) Five numbers are arranged from small to large: ()
54. The ratio of the number of base angles to the degree of top angles of an isosceles triangle is 1: 2, the top angle is (), and the base angle is ().
Molecules of 55 and 27 plus 6. To keep the size of the fraction unchanged, the denominator should be increased by ().
56.9.27 consists of () ones, () deciles and () percentiles, and one decimal place is about ().
57, 86 kg rapeseed can extract oil 30. 1 kg, rapeseed oil yield is ().
58. Divide the land of 1 8 hectare into four parts on average, three of which are planted with peppers, and the pepper land accounts for () of this land.
59. Fill in ○ >, = or
4.5×2. 1○4.5 12 ÷ 1.5○ 12 5 1 1 × 1 1 12 ○5 1 1 0. 1× 10○0. 1÷0. 1
34÷0.0 1○34×0.0 1 4×45+45○4m× 12○m÷ 12(m≠0)
60. Fill in the appropriate units:
The interior space of the classroom is about 45 (). The volume of the ink bottle is about 60 ().
The quality of a bottle of soy sauce is about 500 (). The volume of a barrel of pure water is about 19 ().
6 1. If m parts are produced every day, there are n parts left after 20 days of production, and there are () parts in this batch.
62. China's national flag law stipulates that the ratio of the length to the height of the national flag is 3: 2, and the height of the national flag on the school playground is 128 cm, and the length should be () cm.
63. As shown in the figure, it is the curved surface of the cylinder, so,
The height of this cylinder is () cm, and the radius of the bottom is 8 cm.
It's () centimeters.
64. Make a cubic frame with a length of 144cm. The surface area of this cube is () square centimeters and the volume is () cubic centimeters.
65. A square cylinder with a side length of 18.84 cm has a side area of () square cm and a volume of () cubic cm. (Figures shall be kept to two decimal places)
66. The picture on the right shows a rectangular land 30 meters long and 20 meters wide.
(1) Vegetable fields account for () of this land, while tomato fields account for ().
() In this land, cucumber and eggplant each occupy this land.
The area of this land is () square meters.
(2) If you draw an angle with an area of 45 square meters from the green vegetable field.
There are () square meters for growing peppers and vegetables.
67. As shown in the figure, the volume of the robot is () cubic centimeters, and the volume of the pear is () cubic centimeters.
(1 ml = 1 cm3)
The sixth grade mathematics volume two fills in the blanks special training second class name score
First, multiple-choice questions.
1 80 million is rewritten as "10,000" ()
A, 08,000 b, 80 million c, 800,000 d, 800 million.
2. The actual length of a part is 7 mm, but the length measured on the drawing is 3.5 cm. The scale of this painting is ()
a、 1:2 B、 1:5 C、5: 1 D、2: 1
3. Saw the wire with the length of 13m into four equal parts, each of which is the original length ().
a、 13m b、 1 12m c、 14 D、 1 12。
4. Draw a circle with a compass. The circumference of the compass is 12.56 cm, and the distance between two feet of the compass is ().
a，2cm b，4cm c， 12.56cm。
5, Jianli hydrological station used to measure the change of water level and choose () statistical chart.
A, horizontal bar b, dotted line c, fan-shaped
6. The price of a commodity first rose by 10% and then fell by 10%. Now the price of this commodity is compared with the original ().
A, increase B, decrease C, no change.
7, the following figures can't be converted into a finite decimal is ()
a、 1932 B、7 16 C、 1 13 15 D、720
7.9 1 1 is expressed in decimal, and if it is accurate to one thousandth, the result is ().
a、0.8 1 B、0.8 1.80 C、0.8 1.8D、0.8 1.9
8, a cylinder, dig out the largest cone, become a container, the volume of this container is the original cylinder ().