Fill in the blanks.
1.235600 Write (). Rounding to ten thousand digits is recorded as ().
2.5.4 l = () ml for 90 minutes = ()
3. 1.9 includes () 0. 1 and () 0.
4. The greatest common multiple of 12 and 20 is (), and the smallest common multiple of 16,12 and 20 is (). The least common multiple is ()
5. Turn 6: into a simple integer. The ratio is () and the ratio is ().
On a large-scale map, the distance between the two places is 15 cm, and the actual distance between the two places is () kilometers.
7.237%, and 2.38. ()& gt()& gt( )
8. As shown in the figure, the price ratio of coat and trousers is 5: 4, and it should cost () yuan to buy a pair of trousers.
9. Xiaohong said, "There are two coprime composite numbers, and their least common multiple is 72."
Guess, these two numbers make up the simplest score.
10. There are two cylinders with the same bottom area, one with a height of 6.28 cm and a square side; The B-pillar is 3.6 cm high and has a volume of () cubic centimeters.
2. Right or wrong, mark "√" in the right picture and "×" in the wrong question.
1. The pi of a great circle is twice that of a small circle. ( )
2. Cubes with a side length of 6 cm have the same volume and surface area. ( )
3.5.049 Keep one decimal place for rounding, which is about 5.0. ( )
Add 5 to the numerator and denominator of a fraction, and the result is equal to the original number. ( )
Third, fill in the serial number of the correct answer in ().
1. The following scores can be converted into finite scores ().
( 1) (2) (3)
2. In the following formula, () is an equation.
( 1)5x+4 (2)3x-5； B. ()
3. The volume of a cylinder and a cone is equal, the area of the cylinder bottom is three times that of the cone bottom, and the ratio of the height of the cylinder to the cone bottom is 1: 9. ( )
4. 9 1 piece was produced, all of which were qualified, and the qualified rate was 9 1%.
Third, choose the serial number of the correct answer and fill in ().
1. A natural number can be written as the product of multiplication of two different prime numbers, and this number has () divisors.
( 1)2 (2)3 (3)4
2. A person needs 15 points to climb the mountain and () points to go down the mountain.
( 1) 13 (2) 12 (3) 1 1
Fourth, use a simple method to calculate. (Write a simple calculation process)
1.+2.6+ +0.4 2.+99×
Fourth, the following problems are not synchronized.
1. 1025-4050÷54 2.( 100- 19)÷( 1.63+ 1.07)
3.5- ÷ × 4.5 1.6
5.÷
6. Find out the area of the shaded part in the picture below. (Unit: decimeter)
Seven, column calculation.
1.24 divided by the sum of three. What is the quotient?
2. 19.2 is 42 less than 4.5 times a certain number. Find this number. (column equation solution)
Eight, application questions.
There are 240 science books in class 1.6 (2), with fewer stories than science books. How many story books are fewer than science books?
2. Complete the following statistics.
Attendance Statistics of Huaqiang Company in May 18
May 3 1 day system
3. A pair of leather shoes is sold at a 10% discount, so customers can buy 20 yuan less than the original price. How much are these leather shoes?
4. The fruit shop sold 10 baskets of apples, each weighing 40 kg, and sold 62 kg of apples, each 2.5 yuan, the next day.
(1) How many Jin of apples does * * * sell in two days?
(2) How much is it for two days?
(3) How much did you sell on the first day?
5. Teacher Li deposited 1800 yuan in the bank with a fixed term of 3 years, with an annual interest rate of 2.25% and interest tax of 20%. How much does the bank pay Mr. Li when it is due?
6. The bus and the loan car run in opposite directions from the midpoint of Party A and Party B at the same time. Four hours later, the bus arrives at Party A, and the loan car is 50 kilometers away from Party B. It is known that the ratio of the speed of the loan car to the bus is 3: 4. How many kilometers is it between Party A and Party B?
7. Choose the right proportion and draw this test paper in the box below.
Proportion: _ _ _ _ _ _ _
Mathematical Simulation Volume from Primary School to Middle School (4)
Fill in the blanks.
1. A number consists of five tens and four tenths. This number is written as ().
2.9.08km = () km () m
The reciprocal of 3.0.8 is ().
4. Jinghua Middle School has 120 teachers, and the ratio of old, middle-aged and young teachers is 1: 3: 4, with middle-aged teachers ().
5.2 :5= =( )%。
6. In proportion, the product of two external terms is certain, and the two internal terms are directly proportional to ().
7. When x=0.5, the value of 4x+3 is (). When x = (), 4x+3=7.
8. The circumference of the cone base area is 12.56 cm, and the volume is 37.68 cubic cm. The bottom area of the cone is () square centimeters and the height is () centimeters.
9. 100g sugar is soluble in water, and the bran content of syrup is 12.56. If you add 200 grams of water, the simplest integer ratio of sugar to syrup is ().
10.
As the picture shows, the area of the rectangle is 20 square centimeters. If you draw a person's largest semicircle in this rectangle, the area of this semi-ballpoint pen is () square centimeters.
Second, judge the following questions, correctly draw "√" in (), and wrongly draw "×".
1. All prime numbers are odd except 2. ( )
2. The denominator is a number and the numerator is a prime number. The smallest and simplest score is. ( )
3. The sum of the internal angles of an obtuse triangle and a triangle larger than the tax angle. ( )
Third, choose the serial number of the correct answer and fill in ().
1. The actual distance between Party A and Party B is 320km, and the distance measured on the map is 4cm. The scale of this map is (). ( 1) 1:80(2) 1:8000(3) 1:8000000
2. Comparing the crowded degree of the two pools, the result is ().
(1) Pool A is crowded; (2) Pool B is crowded; (3) The two pools are the same.
Fourth, use a simple method to calculate the following questions. (Write a simple calculation process)
1. 16.4 + 3.5 + 83.6 + 166.5 2.×38.3 + 1.7×
Five, the formula to calculate the following problems.
1.498+9870÷35 2.420.5 - 294÷2.8×2. 1
3.4.÷
5.÷
Six, column calculation.
1 What's the difference? Divided by 20 and 18?
2. A number minus 15% is 5. 1. What's this number? (column equation solution)
Seven, find the volume of the following combination graphics. (Unit: cm)
Eight, application questions.
1. At the 27th Olympic Games, the statistics of medals won by China athletes are as follows:
Gold, silver and bronze medals.
28 yuan 16 yuan 15 yuan
(1) What percentage of the total medals are gold medals? (2) What is the percentage of bronze medals in the number of banks?
(3) What is the proportion of gold medals compared with bronze medals?
2.a car from Dongcheng to Xicheng, with a speed of 42 kilometers per hour, arrives at B city in 5 hours; It took four hours to get back. How many kilometers did you drive every hour on average? (Use proportional solution)
The height of the Egyptian pyramids is about140m now, which is lower than when it was built. How many meters was it when it was completed?
4. It takes 15 days for Team A and Team B to jointly build a canal, and the efficiency ratio of Team A and Team B is 2: 3. How many days will it take if Team B builds the canal alone?
The price of table is 3.2 times that of chair. It costs 2670 yuan to buy five chairs and four tables. What is the unit price of each chair?
6. Fill in the table below according to the chart.