1. The results of the fifth population census are announced: China's total population is1295,330,000, the number written with "ten thousand" is (), and the mantissa after omitting "hundred million" is about ().
2. The smallest eight-digit number consisting of eight different numbers that are not zero is (), which is pronounced as (), and the mantissa after omitting "ten thousand" is about ().
3. Fill in ">" and "
480,000 48000 1 24× 9× 205 79× 10× 79× 9+79
4. The line segment has () endpoints, and the ray has () endpoints.
5. () On the clock face, the angle between the hour hand and the minute hand is a right angle.
6. If A+B = C, then (A+B+C) ÷ C = ()
7,4 □ 93 ÷ 45, the quotient should be two digits, and the maximum number in the mouth should be ().
8. A present B = 20-17, the minimum energy of B is (), and the minimum dividend of A is ().
9. The product of two factors is 75, one factor is unchanged, the other factor is expanded by 5 times, and the product is ().
2. Is the following statement correct? Put √ in the brackets correctly and × in the brackets incorrectly. (5 points)
1, six digits, about 600,000 after "rounding", and the maximum number is 59,999. ( )
2. A straight line is longer than light. ( )
3. The vertical line segment is the shortest line segment drawn from the point outside the line to this line. ( )
4. Units, ten, hundred, thousand and ten thousand are all counting units. ( )
5. The propulsion rate between every two counting units is 10. ( )
Third, choose what you think is right and fill in (). (7 points)
1, in the following figures, only one zero is (). a、803070 B、8030700 C、8003700
2. Look at a straight line with a magnifying glass, straight line (). A, the straight line has not changed. B, the straight line has become longer. C, the straight line has become wider.
3. You can draw a straight line between two parallel lines parallel to these two straight lines. A, 1 B, 2 C, countless
4, when using the calculator operation, if you find that the input data is incorrect, you can use the () key to clear the error.
a、OFF B、CE C、ON/C
5. comparison of straight lines, rays and line segments () a, straight lines are longer than rays, and b, rays are longer than line segments.
C, the line segment is longer than the straight line, and D can't be compared.
6.A ÷ B = 9-5。 If both A and B are multiplied by 100, then the quotient is () and the remainder is ().
9 B、900 C、5 D、500
Fourth, calculation, as long as you are serious, you can definitely do it right. (26 points)
1, write the result directly. (8 points)
890+ 1 1= 450÷90= 730-280= 70×300 = 2 10×5= 4500÷ 15=
670+80 = 780× 0 = 125× 8 = 2400 ÷ 60 = 370,000+620,000 =
7200÷25÷4 = 4 16÷70≈ 120÷39≈ 59×5 1≈ 507×48≈
2. Write (column) the following questions. (12)
107× 35 =1512 ÷ 42 = (check this question): 540× 18 =
3875÷3 1= (check this problem):
3. Column calculation. (4 points)
(1) A number has 256 320. What's this number?
⑵ 1300 minus 1200 and 150. What's the difference?
Answer.
Operate as required. (7 points) l
(1) Draw parallel lines and vertical lines of a straight line L through point A.
Six, according to the contents provided by the statistical table, supplement the statistical table, and answer questions. (2 points for each small question, *** 10)
There are (1) girls in the school.
(2) Grade () has the largest number of students and Grade () has the least number of students.
(3) There are more boys than girls in school.
(4) Draw a statistical chart in the given box (draw two square charts of boys and girls at the same time in each grade)
senior class
senior class
middle rank
low-grade
number of people
1 18
126
1 16 122
132 124
gender
man
woman
(male) (female)
(male) (female)
Number of people (unit: people)
Senior, middle and junior grades
Step into life and show your talents. (5 points for each small question, * * * 25 points)
1. The school bought 30 sets of desks and chairs. Unit price of table is 45 yuan, and unit price of chair is 18 yuan. How much did the school spend on desks and chairs?
The speed of the car going up the hill is 36 kilometers per hour. It takes 5 hours to reach the top of the mountain, and only 4 hours to go back the same way when going down the mountain. How many kilometers per hour does the car average when it goes downhill?
3. The experimental primary school should buy a composition guidance book with the price of 12 yuan for each of the third and fourth grade students. It is known that there are 145 students in grade three and 155 students in grade four. How much are the two grades?
4, the school to carry out water conservation activities, the first three months * * * to save 435 tons of water. According to this calculation, how many tons of water can the school save a year?
Xiaoming reads a story book. If he reads 36 pages a day and finishes it in 25 days, if he reads 45 pages a day, how many days will it take?
The source of art (additional questions 10)
Pour water into an empty bottle with a cup. If you pour 4 glasses of water, the bottle will weigh 520 grams. Pour 9 glasses of water, and a bottle of * * * weighs 920g. How much does a glass of water and an empty bottle weigh?