Junior high school math test paper topic 1, fill in the blanks (20 points)
1. A number consists of five tens, four hundreds, eight thousands, three hundreds and seven tens. This number is written as () instead of? Wan? The number of units is () ten thousand, and rounding to ten thousand places is about () ten thousand.
2.480 square decimeter = () square meter 2.6 liter = () liter () milliliter.
3. The smallest prime number accounts for the largest two-digit even number ().
The ratio of 4. 5. 4: 1 is (), and the ratio with the simplest integer is ().
5. On the map of 1: 800000, Li Ting measured that the distance between Beijing and Nanjing was about 15cm, and the actual distance between the two places was about () km.
6. Among 0.0, 83% and 0.8, the largest number is () and the smallest number is ().
7. The germination test with 500 seeds showed that 10 seeds did not germinate, and the germination rate was ()%.
8. The volumes of the two cylinders A and B are equal, and the ratio of the bottom area is 3:4, so the ratio of the heights of the two cylinders is ().
9.()200 more than 20%, less than () 20%.
10. Put four cubes with a side length of 2 decimeters into a cuboid. The surface area of the cuboid may be () square decimeter or () square decimeter.
True or false (right in brackets? , wrong number? ) (5 points)
1. In proportion, if two internal terms are reciprocal, then two external terms are reciprocal. ( )
2. The formula for finding eight is the same as that for finding eight, which means the same thing. ( )
3. There are four numbers, 2, 4, 8, 16, all of which are composite numbers. ( )
4. The coprime of two numbers must be a coprime number. ( )
5. Two disjoint lines are called parallel lines. ( )
Three, multiple choice questions (the serial number of the correct answer in brackets) (5 points)
1. If a? B=0, then (). A.a must be 0 B.b must be 0.
C.A and b must both be 0 D.a One of them must be 0.
2. In the following figures, the fraction that cannot be converted into a finite decimal is ().
A. BC
3. The following figures are accurate to 0.0 1 ().
A.0.6925？ 0.693 B.8.029？ 8.0 C.4. 1974？ 4.20
4. Put two cubes with a length of 2 decimeters into a cuboid, and the surface area of this cuboid is less than the sum of the surface areas of the two cubes by () square decimeters.
A.4 B.8 C. 16
5. Two wires with the same length, cut from the first one, cut rice from the other one, and the rest (). A. the first length B. the second length C. the length is equal D. it cannot be compared.
Four, the calculation problem (35 points)
1.(5 points) 225+475 =19.3-2.7 =+=1? 1.75=
? = 5. 1? 0.0 1= ? 5.6= 8. 1-6 =
4. 1+ 1? 2= (3.5%-0.035)? 2 =
2. Simple calculation: (4 points)
① ② 102.3 1? 59
③57.5- 14.25- 15 ④ ? 102.3 1+40 ? 102.3 1
3. Calculation of parting: (12)
6760? 13+ 17? 25 4.82-5.2? 0.8? 0.6
( +2 )? (2+3 ) ( ? 10.68+8.52? )? 1
4. Solve the equation (5 points)
x: 1.2=3:4 3.2x-4？ 3=52 8(x-2)=2(x+7)
5. Column calculation: (9 points)
What is the quotient of the sum of (1) 1.3 divided by the difference of the sum of 3? (2) In the division formula, both quotient and remainder are 5, and the sum of dividend, divisor, quotient and remainder is 8 1. What are dividend and divisor? (3) A certain number is 2. 1.2 times that of1. What's this number?
Five, the application problem (30 points)
1. The engineering team built a road with a length of 1600 meters, and 75% of the road has been repaired. How many meters are left to be repaired?
The wireless power plant produced 782 TV sets in March, 786 TV sets in April and 824 TV sets in May. How many TV sets does this factory produce on average every day?
3. Huachuan Machinery Factory is 1 this year? The industrial output value in April was 250,000 yuan, 300,000 yuan, 400,000 yuan and 500,000 yuan respectively. (1) Draw a statistical chart of broken lines. (2) What percentage has the highest output value increased compared with the lowest output value?
4. For a manuscript, it takes 10 days for Party A to print alone, and it takes 5 days for Party B to print alone to complete the manuscript. Now, how many days can two people print 50% of this manuscript?
A passenger train and a freight train leave from two cities at the same time. It is known that the speed of passenger train is 55 kilometers per hour, and the ratio of passenger train speed to freight train speed is 1 1:9. How many kilometers is the railway between the two cities when the two trains meet five hours after leaving?
6. It is known that the speed of the local train is the express train, and the two cars travel in opposite directions from Station A and bilibili at the same time, and meet at a distance of 4 kilometers from the midpoint. What's the distance between Station A and bilibili?
Xiaoshengchu mathematics test paper answer 1. Fill in the blanks:
1、(50408370)(5040.837)(504 1); 2、(4.8)(2)(600); 3、( ); 4、(3 )(27:8); 5、( 1200); 6、
( )(83%); 7、(98); 8、(4:3); 9、(240)(25); 10、(72)(64);
Second, judgment: 1,? ; 2、? ; 3、? ; 4、? ; 5、? ;
3. Selection: 1, d; 2、B； 3、C； 4、B； 5、D；
Fourth, calculation
1, omitted; 2. Simple calculation: ①; ②6036.29; ③27.5; ④4 194.7 1; 3、945,0.92, , 10; 4、0.9,20,5;
5、( 1)0.9;
(2) Divider: [8 1-5-(5+5)]? (1+5)= 1 1 divider: 1 1? 5+5=60
(3) 1.8;