1、5/6? 3/7 means ().

2. On the physical education class, students stand in 4 columns and 7 rows. Xiaohong is in column 3, line 2, and is represented by a number pair ().

3, 3 tons = () tons () kg 70 minutes = () hours.

4、3? ( )=( ):8=( )/( )=0.25=()%

5. In the same circle, the ratio of diameter to radius is ().

6, 60 tons minus 1/6 is () tons, 30% more than () is 70.

7. There are 37 students in one class today, 1 one is sick and two are on leave. The attendance rate of this class today is ().

8. Make a circle with a rope12.56m long. The diameter of a circle is () and the area is ().

9.A number is more than B number 1/5, A number is B number (), and the ratio of B number to A number is ().

The number b is less than the number A ()%.

10, fill ○? & gt& lt？ Or =? .

3/4○3/4? 1 1/ 13 5/7? 12/ 13○5/7 9/ 10? 5/4○9/ 10

Second, judgment.

1 1, 1 m 15% as long as 1% of 15m. ( )

12 When the ratio of degrees of three internal angles of a triangle is 1: 1: 2, the triangle is an isosceles right triangle. ( )

13. The areas of two circles with equal perimeters must also be equal. ( )

14 and 5 kg of salt are dissolved in 100 kg of water, and the salt content of brine is 5%. ? ( )

15, the parallelogram must not be an axisymmetric figure. ? ( )

Third, choose

16, the symmetry axis in the figure below is the most ()

A, rectangle b, square c, circle d, isosceles triangle

17. If a is a non-zero natural number, the largest calculation result in the following formula is ().

a、a？ 5/8 B、a？ 5/8 C、a？ 3/2 D、3/2？ a

18, starting from 20 yuan, the price of a commodity will be raised first 15% and then lowered 15%. This commodity ().

A, the price remains unchanged; B, cheaper than the original price; C, more expensive than the original price; Not in the same breath.

19, rectangle, square and circle with equal perimeter, the largest area is ()

A, rectangle B, square C, circle D, incomparable.

20. It takes 8 hours for Party A to complete a job alone, and it takes 10 hour for Party B to complete it alone. The work efficiency ratio of Party A and Party B is ().

a、8: 10 B、 10:8 C、4:5 D、5:4

Fourth, calculation

2 1, oral calculation

6/7? 3= 3/5? 15= 2-3/7= 1+2%=

7/8? 7/ 10= 5? 2/3= 4/3? 75% = 7/8? 4? 8/7=

1/6+5/6? 1/5= 1/2? 99+99? 1/2=

22. Simplify the ratio and find the ratio.

45 minutes: 1/20 hours 0.2 tons: 50 kg

23, how to calculate how simple.

7/ 1 1? 3/8? 4/9 7/ 10? 10 1-70% 7/8? 7+3/8

( 1/2+ 1/3+ 1/4)? 1/36 (64? 3/8+24)? 5/ 12

24, solving equations

x？ (5/6+6/8)=7/20 2X+30%X=9.2

Five, hands-on operation

O

A

25. Fill in the blanks by drawing as required (right: O is the center of the circle. A is a point on the circumference)

1. The diameter of a known circle is () cm.

2. Take point A as the center and draw a circle with the same size as the known circle.

3. Draw all the symmetry axes of the graph composed of these two circles.

Sixth, solve the problem.

26, only column types are not calculated.

Wangzhuang Coal Mine produced 2.5 million tons of coal last year and plans to increase production by 250,000 tons this year. What percentage has the output increased? Column type.

(2) The original story book of 20 yuan is now sold at 10% off the original price. How much cheaper is each book? Column type.

(3) To build a section of road, 20% was built five days ago. According to this calculation, how many days will it take to complete this road? Column type-

27. Hong Guang Soap Factory has produced 45,000 boxes of soap in February, and 2/5 of them have not been produced. How many boxes of soap are planned to be produced in 65438+February?

28. During Spring Festival travel rush, after the air ticket price from Shenzhen to Wuhan increased by 10%, the air ticket price was 880 yuan. How much is the air ticket before Spring Festival travel rush?

29. The roller of the roller is 2m long and1.5m in diameter. If it rolls eight times a minute, how many meters does it advance? What is the area of the kerb?

30. A math contest * * * has 20 questions, and the scoring standard is 5 points for each question. Do not make mistakes or do problems, 1 point. Liu Liang took part in the competition and got 64 points. How many questions did he answer correctly?

3 1. Li Hong's father got back a salary card of 2300 yuan from the company last month, and was going to the bank to withdraw cash. According to the individual income tax law, the individual income tax will be levied at the rate of 5% for the part whose monthly income exceeds 1600.

(1). How much personal income tax should Li Hong's father pay?

(2) How much money did you actually withdraw from the bank?

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