First, when you go back to the "little judge", judge carefully, put "√" in brackets for the right and "×" for the wrong. 4 points

1, the first term and the last term of the ratio are multiplied or divided by a number, and the ratio remains unchanged. ( )

2, processing a part, the master takes 8 minutes, the apprentice takes 10 minutes, and the apprentice is 20% slower than the master. ( )

3, 4 meters, after increasing, then decreasing, the result is still 4 meters. ( )

The longest line segment in a circle is the diameter. ( )

Second, be a qualified citizen, choose carefully and put the serial number of the correct answer in brackets. 4 points

1 and 100g sugar water contain 25g sugar, and the ratio of sugar to sugar water and sugar to water are () respectively.

A, 1: 4 and 1: 3 B, 1: 4 and 1: 5 C, 1: 5 and 1: 4 D, 1: 5 and/kloc.

2. After the number of a gymnastics team increased, it decreased again, and now the number is compared with the original ().

A, increase B, decrease C, constant D, uncertainty

3. Take a coin and throw it up at will 100 times. After landing, the ratio of positive and negative time is most likely to approach the ratio of which of the following. ( )。

a、4∶ 1 B、9∶ 1 C、3∶7 D、 1∶ 1

4. Draw the largest circle in a square, and the area of this circle is the area of the square ().

a、B、78.5% C、D、

Third, when you return to the "little doctor", fill it out carefully. 22 points (2 points for the third question, 65438+ 0 points for each other question)

1, 40 kg = ton; Hours = () minutes; 100 is 75; 25 tons is 30% of () tons;

200 kg minus 12.5% is () kg; 12% If the number exceeds 25, it is ().

2. One kilogram of soybean can extract oil, 1 kg of soybean can extract () kg of oil, and it takes () kg of soybean to extract 1 kg of oil.

3, 3.5 = () ÷ 6 = = (): () The simplest ratio.

4. The number A is the number B, the ratio of the number B to the total number of Party A and Party B is (), and the difference between the two numbers is equivalent to the number B. ..

5. fill in ">", "

× ○ 1÷ ○ 1× ÷0. 1○ × 10

6, 8 tons of coal, used, then used tons, A * * * used () tons.

7. It takes 65,438+05 hours for Party A to walk a certain distance, and 65,438+00 hours for Party B.. The simplest walking time ratio of Party A and Party B is () and the walking speed ratio of Party A and Party B is ().

8. "A canal has been repaired, and there are still 240 meters left to be repaired. How many meters is this canal? " The equivalent relation of this problem is ().

9. "Li Qian deposited 500 yuan's lucky money in the bank, and the bank paid Li Qian 5 1 1.25 yuan (including interest tax) when withdrawing money one year later." In the question, the principal is () yuan, the interest is () yuan, and the annual interest rate is ()%.

Fourth, I can draw and count. 6 points (2+4)

1. Draw the symmetry axis of the figure below. 2. Find out the perimeter and area of the picture below. (Unit: meter)

Fifth, when you return to Zhuge Liang, you should check it carefully after reading it! 30 points (4+ 18+8)

1, write directly.

÷ = 0× = ÷ = 1+ =

× = ÷ = × = ÷ =

2. How to calculate the following questions as simple as possible?

+ × ÷2 [ 1-( + )]÷ ( + - )×24

[4-( - )]× × + ÷4 2- ÷ -

3. Column calculation.

(1) What is the sum of a number multiplied by?

One number is 80. What is the number?

6. I am good at solving problems. 34 points [4+4+24(4+4+6+6+4)]

1, only column types are calculated, not calculated. "Xiao Ming read a story book and read 30 pages on the first day. How many pages did you read the next day? "

(1) The number of pages read the next day is the first day (); (2) I can't see () the next day;

(3) I read more pages the next day than the first day (); (4) is the number of pages read the next day ().

2. Look at the picture, the formula is not worked out.

⑴ ⑵

Line: line:

3. Answer the following questions.

(1) The number of comic books in the library belongs to science and technology books, and the number of story books belongs to science and technology books. There are 90 comic books known. How many story books are there?

(3) In the figure below, the square with the radius of the circle as the side length has an area of 75 square centimeters. Find the area of a circle.

(2) A section of road is 30 kilometers long, and it takes 15 days for team A and 15 days for team B. How many days can the two teams fix it together?

(4) There are 56 students in Class 4 (5) in this school, and the number of girls is the number of boys. How many boys are there? (Three ways to answer)

5] A company is operated by a four-share partnership. At the end of the year, the company realized a net profit of 7 million yuan and paid dividends by shares. Calculate how much each shareholder should get at the end of the year and fill in the table below.

Shareholders, shareholders, shareholders, shareholders, shareholders, shareholders, shareholders.

Shares (shares) 20 10 18 52

Profit (ten thousand yuan)