Jiangsu education printing plate sixth grade mathematics basic examination paper.

Dear students, the journey of wisdom at the end of primary school is about to begin! As long as you carefully analyze every problem along the way, you will definitely get an unforgettable travel memory. Are you ready? Let's go!

Scoring reviewer

Let me fill in: (2 points for each question, *** 18 points. )

1. A number is 5 in hundreds of millions, 5 in tens of thousands, 5 in the highest place, and all other numbers are 0. This number is written as (), and the mantissa after omitting hundreds of millions is ().

2.25% = = (): 20 = () (fill in decimal places)

3, 6.596596 ... is a circular decimal, which is simply called (), and two decimal places are reserved.

The ratio of 4 to 2 is (), and the simplest integer ratio is ().

5. Among the plane figures we have studied, () has the largest number of symmetry axes, including ().

6, coal is a non-renewable resource, an average of 3 tons of coal is divided into 5 parts, each part is 3 tons of coal ().

7. In the natural number of L-20, () is both an even number and a prime number; () is both odd and composite.

8. Xiaohong read a 320-page book. On the first day, she read it The next day, she should start reading from page ().

9. One acute angle of a right triangle is 35, and the other acute angle is ().

Scoring reviewer

Secondly, I will choose: (put the serial number of the correct answer in brackets) (65438+ 0 points for each question, ***4 points).

1. On a map, the actual distance of 90km is indicated by 2cm, and the scale of this map is ().

( 1) (2) (3) (4)

2. When two numbers are divided, the quotient is greater than 50 and 30. If the dividend and divisor are reduced by 10 times at the same time, the quotient and remainder obtained are ().

(1) Quotient 5+3 (2) Quotient 50+3 (3) Quotient 5+30 (4) Quotient 50+30

3. The scientific and technological team used 500 wheat seeds for germination test, and 20 of them did not germinate. The germination rate is ().

( 1) 250% (2) 3.85% (3) 96% (4) 4%

4.4x+8 is misspelled as 4 (x+8), and the result is better than the original ().

(1) More 4 (2) Less 4 (3) More 24 (4) Less 24

Scoring reviewer

Third, the judgment (the "x" in brackets is correct, and the "x" in brackets is wrong). ) (65438+ 0 points for each question, ***4 points)

1, the score with a large fraction unit must be greater than the score with a small fraction unit. ( )

The weight of a ping-pong ball is about 3kg. ( )

A circle has countless radii, and they are all equal. ( )

4. Put 10g salt into 10g water, and the ratio of salt to brine is 1: 10. ( )

Scoring reviewer

Four. Calculation: (***26 points)

1, write directly. (65438+ 0 points for each question, ***8 points)

4× = ÷ = + = ÷6=

7÷ = × = - = ÷ =

2. calculation. (3 points for each question, *** 12 points)

①25× 1.25×32 ② 10÷[ -( ÷ + )]

③ (20.2×0.4+7.88)÷4.2 ④( )÷ +

3, solve the equation (proportion) (6 points)

4+0.7 = 102 : = :

Scoring reviewer

Five, do the questions as required (9 points)

1. Draw the vertical and parallel lines when the known straight line intersects with point A outside the straight line. (4 points)

. A

2. Calculate the volume. (Unit: meter) (5 points)

Scoring reviewer

Six, only comprehensive formula or equation, not calculation (2 points per question, ***6 points)

1, 25% of a number equals 36, what is this number?

2.3.9 What is the product of subtracting the quotient of 7.5 divided by 5 and multiplying the difference by 0.25?

3. The bottom surface of the iron ventilation pipe is 20cm in diameter and 90cm in height. How many square centimeters of iron does it take to make a 100 section ventilation duct?

Scoring reviewer

Seven, according to the different conditions given, the formulas are listed separately, not calculated.

(3 points for each question, ***9 points)

There are 400 literature books in the library. How many science books are there?

(1) The number of literary books belongs to scientific books.

(2) There are more science books than literature books.

(3) Literature books are equal to 60% of science books.

Scoring reviewer

Eight, solve the problem (6 points per question, ***24 points. )

1, rectangular plate, 45 meters long and 20 meters wide. In order to make full use of environmental protection, the biggest circle on this board should be cut off. Would you please calculate the area of this circle?

2. Make the environmental protection granary cylindrical. A cylindrical granary, measured from the inside, has a bottom radius of 2.5 meters and a height of 2 meters. How many cubic meters of rice can this granary hold? If each cubic meter of rice weighs about 545 kilograms, how many kilograms of rice can this granary hold? (Keep the whole kilogram)

3. Planting trees to keep green is an important part of environmental protection. Sanxin village carried out afforestation activities, and five people planted 90 trees. According to this calculation, how many trees have 30 people planted? (Solve with proportional knowledge)

4. Statistics on the number of tourists in a tourist city in recent years. (below)

In 2000, the number of tourists increased compared with 1998.

How much longer? Compared with the number of tourists in 2002

What percentage did it increase in 2000?

Scoring reviewer

Nine, Ph.D. in Mathematics (additional questions, 10)

A ship sailed from Port A to Port B, sailing 96 kilometers in the first three hours. After that, the hourly journey was 1 times of the original, and it took another 2 hours to reach the B port. Find the average speed of this ship.

have you finished? Look it up, don't leave any regrets for yourself!

Attachment: Reference answers and grading standards:

1. Fill in the blanks (2 points for each question, *** 18 points. )

1, 5500050006 billion 2,8450.25

3、6.596 6.60 4、8 8: 1

5. There are countless cycles 6, 1/5 7, 2 9, 15.

8、 12 1 9、550

Second, the choice (65438+ 0 points per question, ***4 points)

1、(4) 2、(2) 3、(3) 4、(3)

Third, the judgment (65438+ 0 points for each question, ***4 points)

1、× 2、× 3、√ 4、×

Four, calculation (26 points)