Try it, and you can fill it in. (Per grid 1 minute, ***27 points)
1, 5,800,700 writing, rewritten into tens of thousands.
2. The smallest three digits divisible by 2, 3 and 5 is (), and the three digits are ().
3, 3 kg 50 g = () g 4 hours 15 minutes = () hours
4. A basketball court covers an area of 420 () and an egg is about 50 ().
5. It takes * * * 10 minutes for a 2-meter-long wooden stick to be sawed into 5 segments on average, each segment accounts for () of the total length, and the time required for sawing 1 segment accounts for () of the total time.
6. A story book has page A, Xiao Ming reads page 12 every day, page () on day B, and page () remains unread.
7, a kind of mineral water, retail every bottle sold in 2 yuan, shopping malls to thank customers for their love of this product, specially launched a "buy four get one free" big reward activities, shopping malls preferential measures ()%.
8. A circle has a radius of 4 cm, a circumference of () and an area of ().
9. There are 20 boys and 5 girls in Class 6 (1). The ratio of boys to girls is (), and the ratio is ().
10, Xiaoming's home is one kilometer away from school. He arrived from home in 0.3 hours. He walks () kilometers every hour. If Xiaoming has left 1 1 km, there are still () km left.
1 1, the circumference of a rectangle is 20cm, and the aspect ratio is 7: 3. The area of this rectangle is ().
1 2. After the decimal point of A is shifted to the right by1,it is equal to B, 42.3 more than A, and A is ().
13, the boiling temperature of water is above zero 100℃, which is recorded as ()℃; The lowest temperature on the earth's surface is at the South Pole, which is-88.3 degrees Celsius, recorded as ()℃.
14, bicycles and tricycles ***20 vehicles with 52 wheels, bicycles () and tricycles ().
15. Cut a cube with a side length of 3m into two identical cuboids, each cuboid has a volume of () and a surface area of ().
Second, think about it, which is the most suitable? Choose the correct answer and fill in the brackets. (65438+ 0 points for each question, ***5 points)
1, if the number of a is equal to the number of b, (the number of a is not equal to 0) the number of a _ _ b.
a 、> B 、< C 、=
2. Two wires of the same length, cut from the first one, cut rice from the second one, and the rest ().
A, the first one is long b, and the second one is long c, which can't be compared.
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. a、6a2 B、8a2 C、 12a2
4. Objects composed of cubes of the same size are viewed from the front, top and right respectively ().
A, B, C,
5. The length of batten A is 9 cm, and the length of batten B is 7 15 of batten A. These two kinds of battens form an isosceles triple solution shape, and the circumference of an isosceles triangle is () cm.
a、 12.6 B、 17.4 C、22.2
Take the lead
Marker
Third, please be the referee. (Put "√" in the brackets for the right and "×" for the wrong, each question 1, * * * 5).
1, Xiaoming is 160cm, Xiaohua is 1m, and the ratio of Xiaoming to Xiaohua is 160: 1. ………… ( )
2. If the length and width of a rectangle are increased by 3m, its area will be increased by 9m. ………………( )
3. The circumference of a circle with a radius of 2dm is equal to its area. ………………………………………… ( )
4. Cut a cylindrical piece of wood into a new cone, some of which are cylindrical in volume. …( )
5. A commodity is sold at a 10% discount, which is cheaper than the original price 17%. …………………………( )
Take the lead
Marker
Fourth, please calculate. (26 points)
1, can you accurately calculate the number of the following formula? Give it a try! (4 points)
0.36+04= 4.8 = = 1 =
1.5÷0. 1= = 1—( = 1234—998=
2. How simple do you think the following questions are? (12)
1.25 32 7.38—( 1.57+2.38)
4.8×96+4.8÷
3. Can you solve the following equation? Give it a try! (4 points)
1- = =
4, text questions (6 points)
(1)? (2) What number?
V. Graphic operation and calculation (12)
1. Draw a triangle with the same area as the parallelogram in the square on the right. (2 points)
2, fill in the blanks and drawing as required (5 points)
(1) Draw a right triangle in the grid diagram below (the side length of each grid is expressed as 1㎝), where the vertices of two acute angles are determined at the positions of (5, 7) and (1, 3) respectively, then the vertex position of the right angle can be ().
(2) Move the triangle 5 squares to the right to draw a triangle.
(3) Draw a triangle at an appropriate position after reducing 1: 2.
(4) The area of the first triangle is () square centimeters.
3. As shown below: Triangle ABC is an isosceles right triangle, and point E is the midpoint of side AC.
AB=6 cm, find the area of the shadow part. (5 points)
Six, solve the problem (25 points)
1. The drum of the drum is a cylinder. This drum is 2 meters in diameter and 5 meters in length. Now the roller rolls forward 120 turns. What is the area of the pressed road surface? (4 points)
As shown in the picture, the price ratio of coat and trousers is 5: 4. How much should it cost to buy a pair of trousers? (4 points)
During the summer vacation, Xiaohong launched the activity of "reading a good book". On the first day, she finished reading the whole book. On the second and third day, she read 30 pages. After reading this book, how many pages does it have?
(5 points)
On Mother's Day, Xiaodong gave his mother a cylindrical teacup with a bottom radius of 3 cm and a height of 12 cm, and put it on the table. (pictured)
(2) How many grams of water is poured into the teacup (regardless of the thickness of the teacup)? (The weight of water per cubic centimeter is 1g, and the whole gram should be reserved) (4 points)
On Sunday, Xiaoming's mother went to the pedestrian street to play, and saw a billboard posted at the door of a shop, saying, "All clothes in this shop are sold at a 20% discount." Xiaoming's mother took a fancy to one of the clothes. After some bargaining, the shopkeeper promised another 5% discount. As a result, Xiao Ming's mother spent 152 yuan to buy this dress. Students, can you work out the original price of this dress? (6 points)
Reference answers and grading standards
Try it, and you can fill it in. (Per grid 1 minute, ***27 points)
1, 5800700, 5800702, 120, 990 3, 3050, 4.25 4, square meters, 5g,
6、 12b a- 12b 7、20 8、25. 12㎝ 50.24cm2 9、4:3、 10、A÷0.3、A- 1 1 1 1、2 1cm2 12、4.7 654333
Second, think about it, which is the most suitable? (65438+ 0 points for each question, ***5 points)
1、B 2、C 3、B 4、A 5、C
Third, please be the referee. (65438+ 0 points for each question, ***5 points)
1、× 2、× 3、× 4、√ 5、√
Fourth, please calculate. (***26 points)
1, (0.5 points for each question, ***4 points) 0.761.85151236
2. (2 points for each question, *** 12 points)
1.25 32 7.38—( 1.57+2.38)
= 1.25×8×4×2.5… 1 = ………… 1 = 7.38-2.38- 1.
=10×10 ................1.5 points = 2 points in ............. = 5- 1.57... 1.5 points.
=100 ......................... 2 points = 3.43..............2 points.
4.8×96+4.8÷
= … 1 = … 1 =4.8×(96+4)… 1.
=... 1.5 = ... 1.5 = 4.8× 100 ... 1.5.
= 90 ……………………………………………………………………………………………………………………………………………………………………………………………………….
3. (2 points for each question, ***4 points)
1- = =
Solution: =1-... 65438.
= …………………………………………………………………………………………………………………………………………………………………………… 1.5.
= ……………………………………………………………………………………………………………………………….
4, text questions (3 points for each question, ***6 points)
(1) () ÷ (×) ...2 points (2) Solution: This number is just like this.
= x 2..............2.5 points +7 = 19...2 points.
=...3 points = 12...2.5 points.
= 48 ...3 points
Verb (abbreviation of verb) graphic operation and calculation (2 points +0 in question 65438, 5 points in question 2, 5 points in question 3, *** 12 points)
1, drawing as required (2 points)
Note: If the figure meets the requirements, it will be scored.
2, fill in the blanks and drawing as required (5 points)
3.(5 points)
6× 6××× ............................... 3 points.
= 36××…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
= 9 square centimeters ........................................ 5 points.
Six, solve the problem (1, 2 questions each 4 points, 3 questions each 5 points, 4 questions each 6 points, ***25 points)
1、
3.14×1.2× 5×120 ......................................... 2 points.
=18.84×120 .......................... 2.5 points.
= 2260.8 (㎡) .................................. 3 points.
Answer: The pavement area is 2,260.8 ㎡. ........................., 4 points.
2、
5+4 = 9 ............... 1.5 points.
90× =40 (yuan) ..................................................................................................................................................................
A: I want a pair of pants for 40 yuan. ........................., 4 points.
3,30 ÷ [1-(+)] ................................. 2 points.
= 30 ÷ [1-] ................... 2.5 points.
= 30 present ..................... 3 points.
= 180 (page) .............................. 4 points.
A: This book has 180 pages. Five points.
4. (1) 3.14× 32 = 28.26 (square centimeter) .......................1score.
A: The area occupied by this teacup on the desktop is 28.26cm2. ........................, two points.
(2) 3.14× 32×12× ..................................... 2 points.
=3. 14×9× 12×
=28.26×9
= 254.34 cubic centimeters ......................... 2.5 points.
254.34× 1≈254 (g) ...............................................................................................................................................
A: After water is poured into the teacup, the teacup contains about 254 grams of water. ........................., 4 points.
5, 152 ÷ [80% × ( 1-5%)] ……………………………………………………………………………………………………………………………………………………………………………………………………………………….
=152 present [80% × 95%] ..................................................... 4 points.
=152 ÷ 0.76 ...................... 4.5 points
=200 yuan .................................. 5 points.
The original price of this dress is 200 yuan. ........................ scored six points.