Xiaoshengchu mathematics examination paper and answer discipline education edition

The beginning of junior high school is a watershed. Good grades in primary school do not mean good grades in the future. The key is to do problems often in life and exercise your ability to do them. The following is the "Education Edition Junior High School Mathematics Test Paper and Answers" that I compiled for you. For reference only, I hope I can help you.

1. Fill in the blank: (65438+ 0 for each blank, ***20)

1, a nine-digit number, the highest bit is the largest bit, the hundreds and hundreds of bits are 1, the tens of thousands of bits are 5, and the other bits are 0. This number is written as _ _ _ _ _ _ _.

Read, omit the mantissa after "ten thousand" and record it as _ _ _ _ _ _ _.

2. 5 tons and 40 kilograms = _ _ _ _ _ _ tons, 2. 15 hour = _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

3, 4 ÷ = 0.8 = _ _ _ _ _ _% = _ _ _ _ _ _.

4.A=2×2×3, B = 2× 2× 2, the greatest common divisor of A and B is _ _ _ _ _ _ _, and the smallest common multiple is _ _ _ _ _ _ _.

5. Saw the 2-meter-long steel pipe into 5 sections on average, each section is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

6. Of the sum of five numbers 3. 14, 1, π, 125%, the largest is _ _ _ _ _ _ _, and the two equal numbers are sum _ _ _ _ _.

7. If 0.6x=y(x is not equal to 0), then x: y = _ _ _ _ _ _ _, and y is _ _ _ _ _ _ _% less than X. ..

8. The circumference of a circle is 3 1.4 cm. Draw the largest triangle in the circle with one of its diameters as the base. The area of this triangle is _ _ _ _ _ _ _ square centimeters. (π is 3. 14).

9. To complete a project, the original plan was 10 day, but the actual daily work efficiency increased by 25%, and it actually took _ _ _ _ _ days to complete the project.

Second, multiple-choice questions: (fill in the serial number of the correct answer in brackets, 65438+ 0 points for each small question, ***5 points)

10, the two sides forming an angle are _ _ _ _ _ _ _.

A, straight line b, ray c, diagonal line

1 1. If the product of two numbers changes from 265.4 to 2.654, then there is only one factor _ _ _ _ _.

A, reduce 10 times b, expand 100 times c, reduce 100 times.

12, add 5 to the numerator and denominator of a true fraction, and the value of the obtained fraction is _ _ _ _ _ _ higher than that of the original fraction.

A, big b, small c, unchanged

13. On the map with the scale of 1: 1000000, it is measured that a rectangular piece of land has a length of 4 cm and a width of 2. 5 cm, the actual area of this land is _ _ _ _ _ _ _.

a， 1000 km2 b， 100 km2 c， 10 km2。

14. Cut out a square with the largest area from a circular piece of paper with a radius of 5cm, and the square has an area of _ _ _ _ _ _ _ _.

A, 60 cm2 B, 55 cm2 C, 50 cm2

Three. True or false questions: (tick "√" for the questions and "×" for the wrong questions, each question 1, each question ***5)

15. For all natural numbers, they are either prime numbers or composite numbers. ()

16、2600÷500=26÷5=5…… 1()

17, the time is constant, and the time to produce each part is inversely proportional to the number of parts produced. ()

18. In the standard test of a class, the number of people who fail to meet the standard is the number of people who meet the standard, and the standard rate of students in this class is 96%. ()

19. If a triangle and a parallelogram have the same area and height, then the base of the parallelogram is half of the triangle. ()

Four, column calculation:

20. Write numbers directly (65438+ 0 points for each small question, ***8 points)

①529+ 198=②305- 199=③2.05×4=

④8× 12.5%=⑤=⑥=

⑦0.68++0.32=⑧÷+0.75× 10=

2 1, simple method calculation (4 points for each small question, ***8 points)

①25× 1.25×32②(3.75-2.9+2.25)÷3 1%

22. Calculation (4 points for each small question, *** 16 points)

①5400-2940÷28×50②(20.2×0.4+7.88)÷4.2

③÷+④ 10÷[-(÷+)]

23, column calculation (each 4 points, ***8 points)

(1) 0.8 minus 0.75 divided by quotient, what is the result?

② The sum of a number and 30% of this number is 12.2. Find this number.

Verb (abbreviation of verb) Application question: (5 points for each small question, * * * 30 points)

24. Qin Yang Cement Plant produced 42,500 tons of cement in the first half of last year, and the output in the first five months of the second half was as much as that in the first half. According to this calculation, how many ten thousand tons of cement could be produced last year?

25. A TV factory produced 35,000 29-inch color TV sets last year, and 30% of the 29-inch color TV sets are exactly a quarter of the 34-inch color TV sets. How many tens of thousands of 34-inch color TV sets have been produced?

26. There is a cuboid glass tank filled with water, and a cylindrical ingot with a bottom radius of 1 decimeter is submerged. When the ingot is taken out of the glass jar, the water level in the jar drops by 0.5 decimeter. It is known that the bottom area in a rectangular glass jar is 3 1.4 decimeter. What is the length of this cylindrical ingot? (π takes 3. 14)

27, a pile of coal, the original plan to burn 750 kilograms a day, can burn for 24 days; In fact, only 600 kilograms of coal is burned every day. How many days can this pile of coal burn?

28. Xiaoming read a story book. On the first day, he read 24 pages, accounting for 37.5% of the book. The next day, how many pages are left?

29. To produce a batch of parts, Party A can manufacture 18 pieces per hour, and Party B needs 12 hours to complete it alone. It's up to Party A and Party B now.

When working together to complete the task, the proportion of parts produced by both parties is 3: 5. How many parts does Party A produce?

20 16-20 17 junior high school mathematics test paper answer analysis

1. Fill in the blank: (65438+ 0 for each blank, ***20)

1、900 150 100; 900, 150, 100; 9001.52,5.04; 2; 93、5; 80; 8 (or 8)

4、4; 485、; M 6，π； 125%; 7、5:3; 208、259、8

Second, multiple-choice questions: (1, * * 20)10 ~14: bcaac.

Three. True or false: (1 point per grid, ***20 points)15 ~19: ××××××××.

Four, column calculation:

20, (per grid 1 min, ***20 points)

①727② 106③8.2④ 1⑤⑥⑦⑧ 12

2 1, (4 points for each small question, 8 points for * * *)

① Original formula = (25× 4 )× (1.25× 8) =100×/kloc-0 =1000 ② Original formula = (6-2.9) ÷ 0.3/kloc-0.