A level (lively topic \ wide knowledge)

Read the questions carefully and fill in the blanks carefully. (0.5 points for each question in 1~ 12, 13~ 17, 1)

1. In the charity fund-raising activities for the earthquake-stricken areas, the total amount of donations and materials from all walks of life at home and abroad was 45.032 billion yuan, and the writing () was rewritten as () billion yuan.

2. Eighty torchbearers of the Beijing Olympic Games carried the torch relay of 16km, each running () meters and each running (1 )( 80) the whole distance.

3, 40 kg = () tons of 6000 square decimeters = () square meters.

1.25 hours = () minutes 2.08 liters = () milliliters.

4. The greatest common factor of12 and 16 is (), and the smallest common multiple is ().

5. Xiaohong's time from home to school is directly proportional to her speed, and the number of copies subscribed to the primary school mathematics newspaper in Class 6 (3) is directly proportional to the total amount of money.

6. The PLA soldiers conducted a shooting test, and each of the five soldiers fired 50 bullets. * * * Eight bullets missed, and the hit rate of this test is ().

7. Miss Li bought five pens and five ballpoint pens, each of which cost one yuan and two yuan, and it cost () yuan. He paid one hundred yuan, so he should get () yuan back.

8. As shown on the right, the shaded area is () square decimeter.

9. () ⊙ () = 20: () = (12)15 = 0.8 = ()% = () times.

10, Xiaoming and Xiao Qiang play dice. If the number of rolls is less than 3, Xiao Ming wins; If the number of rolls is greater than 3, Xiao Qiang wins, the probability of Xiao Ming winning is (), and the probability of Xiao Qiang winning is (). Are the rules of the game fair? ( )

1 1, 52: 1.25 The simplest integer ratio is (), and the ratio is ().

12, the scale of the map means that the distance () cm on the map is equivalent to the actual distance ().

Kilometers, if the actual distance of 75 kilometers is to be drawn () centimeters on the map, then the ratio of this line segment to the numerical scale is ().

13. In the activity of greening the campus, there are 50 boys and 40 girls planting trees in Class 6 (1), and girls plant trees less than boys ()%.

14, 34 of a box of apples is equal to 58 of a box of pears, so the weight ratio of a box of apples to pears is ().

15. Distribute 4 tons of chemical fertilizer to villages A, B and C according to 1︰3︰4. Village B received (3)(8) of this batch of chemical fertilizer, and Village A received () tons.

16. Make a cube frame with 48 decimeters of iron wire. The surface area of this cubic frame is () square decimeter and the volume is () cubic decimeter.

17, "six? In the first phase, a shopping mall held a preferential activity. After a 20% discount on a suit, 160 yuan. The original price of this suit is () yuan, which is a discount of () yuan.

Second, choose carefully and choose the best among the best. (65438+ 0 points for each question, 8 points)

1, the number closest to 9000 in the following numbers is ().

a，8990 B，0.9 10000 c，9999 D，08900。

2. RT Mart supermarkets use the "Happy Turntable" to hold promotional activities in summer (as shown on the right). If the pointer falls in the red area, it means winning the toy car, so the possibility of winning the toy car is ().

a、 12.5% B、 12% C、 13% D、 14

3. Divide a rope into two sections, the first section is 59 meters long, and the second section accounts for 59% of the total length. Compare the lengths of these two paragraphs ().

A, the first paragraph length b, the second paragraph length c and the same length d are not comparable.

4, the number of symmetry axes in a column of graphics is the largest ()

a、B、B、C、D

5. In the following relation, x and y in () are not proportional.

a、X× 1Y =3 B、5X=6Y C、4÷X=Y D、X= 13 Y

6. There is a watch part with a length of 5 mm, the length of the design drawing is 10 cm, and the scale of the drawing is ().

a、 1︰20 B、20︰ 1 C、 1︰2 D、2︰ 1

Xiaoming is two years older than Xiao Qiang and four years younger than Xiaohua. If Xiao Qiang is y, Xiaohua is ().

a、Y-2 B、Y+2 C、Y+4 D、Y +6

8. It is known that a× 56 =135× b = c23 = d-150%, and a, b, c and d are not equal to 0, then the smallest number among a, b, c and d is ().

A、A B、B C、C D、D

Third, carefully examine the questions and calculate them carefully. (***23 points)

1, see who is faster. (0.5 points for each question, 5 points)

0.36+ 1.7= 56 ×8 15 = 0.32×0.05= 1.2÷67 = 25 ×34 ÷25 ×34 =

6.8- 1.08= 50×30%= 87 -34 - 14 = 0. 18÷0. 12= (38 +34 )×8=

2. See who is right. (2 points for each question, 12 points)

7.2×99+7.2 5-(67 ÷3 14 +3 16 ÷38 ) (57 +227 )×7+ 1327

0. 125×2.5×3.2 1.05×(3.8-0.8)÷6.3 34 ÷[(35 - 14 )×37 ]

3, skillfully solve the unknown X. (2 points for each question, 6 points)

X-85% X = 1.05 X︰5 14 = 2 1︰58 4.5X-0.5 = 8.5

Fourth, practice with your head. (*** 10 point)

1, observe first and then fill in the blanks. (65438+ 0 points per grid, 2 points)

1+3=4=22 1+3+5=9=32 1+3+5+7= 16=42 ……………………

1+3+5+7+……+ 19=( )=( )

2. The following is the plan of Shatou Town. Please draw the location of this place on the floor plan. (65438+ 0 points for each question, 4 points)

① Shatou Central Primary School is 800 meters east of the traffic control office.

② Shatou Post Office is located at 700,450 northeast of Traffic Management Office.

③ Shatou Xingfu Village is located at 400 and 300 southwest of the Traffic Control Office.

(4) Traffic Management So there is a high-grade highway at 500 south along the Yangtze River, which is parallel to Shisha Road.

3. There is a triangle with three vertices at A (2 2,8), B (2 2,5) and C (4 4,5) respectively. (65438+ 0 points for each question, 4 points)

Draw this triangle first. ② Rotate the triangle 90 degrees clockwise around point C. 。

③ Translate the rotated triangle by three squares to the right, and then by two squares downward.

④ Enlarge the rotated triangle according to 3: 1.

5. Go into life and solve problems. (***36 points)

(a), the following questions, only the column equation or comprehensive formula is not calculated. (2 points for each question, 8 points)

1, a 240-page book, Xiaohong read 20% on the first day and 30% on the second day. How many pages did she read in two days?

A shopping center sold 45 TV sets yesterday, 75% more than the washing machines. How many washing machines were sold yesterday?

The garment factory wants to produce 6000 sets of garments, 40% of which have been produced in the first five days, and the rest will be completed in six days. How many sets of clothes will be produced on average every day?

4. Uncle Wang deposited RMB 65,438+00,000 in the bank for three years at an annual interest rate of 5.40%. After deducting 5% interest tax, how much interest did Uncle Wang actually earn?

(2) Solve practical problems. (4 points for each question, 28 points)

1. The actual investment in the central primary school complex is 2.3 million yuan, which is 200,000 yuan less than planned. What percentage was saved?

2. Nanshan Orchard has 1500 peach trees, 20% more than pear trees. How many pear trees are there?

3.5 years ago, my grandfather was 60 years older than my grandson. My grandson's age this year is 15. How old are my grandfather and grandson this year?

4. Master and apprentice cooperated to complete a batch of tasks with 960 parts, and the task was completed after 8 days. The ratio of the number of parts made by master to the number of parts made by disciples every day is 5︰3. How much do masters and apprentices earn every day?

5. The circumference of the bottom of the conical wheat pile is 6.28 meters, and the height of the wheat pile is 1.5 meters ... If the wheat weighs 750 kilograms per cubic meter, how many kilograms does this pile of wheat have?

On Sunday, forty-two people from Class Six (3) went boating in the park. Every five people have a big boat and every three people have a small boat. A * * * rented a boat of 10. How many big boats and small boats did they rent?

7. The school needs to buy 50 desks to decorate the new office building. At present, three furniture stores, A, B and C, can choose, and their desk prices are all within 200 yuan. Please help the teacher figure out which store to buy to save money.

Store A: If you buy 10 desks, you will get 2 desks for free, and if you don't have enough 10 desks, you won't get them.

Shopkeeper B: Each table is discounted to 35 yuan, and it is not given away.

After shopping in 400 yuan, return to 60 yuan.