How to do this question? 4th grader teacher in 10

1.Wrong. A minimum of 4 saws is required.

2.Wrong. 11 people on each side of the outermost layer.

3.Wrong. 11 street lights are needed.

4.Wrong. It took eight-thirds of a second to knock 4 times.

1 False 4 times.

2 Wrong: 11 people on each side.

3 Wrong eleven one.

4 False, four clicks for about a second.

1 False 4 times.

2 False: 11.

3 False 11 roots.

4 Wrong 8/3 seconds.

Wrong, just saw it four times.

Wrong, it's 40 4 1 11 people.

Wrong, from beginning to end it should be 100 10 1 11.

Wrong, it's three intervals, one second apart each, so it's 3 seconds.

The first question is wrong. Three times. The first time, then put the two together and make a big one, so that you get four, and then take one of them and make another one, and then you get five.

The second question is wrong. It should be 11 people. Because the person at the corner is counted twice, it should be 11*4-4=40

The third question is wrong. It should be 11. The beginning of the road needs to be an, and then every 10 meters, and so on is 11.

The fourth question is incorrect. If the time of the sound is ignored, then the interval between the sounds is 1 second, then the interval between 4 times is 3 seconds, and the interval is 3 seconds. If the interval between rings is ignored, each ringing is two-thirds of a second, and four beats are eight-thirds of a second.

No matter how you analyze it, it's not 4 seconds.

1. Wrong, just saw it four times.

2. Wrong, there are 11 people standing on each side of the outermost layer.

3. Wrong, each end should be safe, then 11 street lights are needed.

4, right.

The increased area is:square centimeters).As shown below:

Thinking about Chi Ziming: Nuclear [increased the upper part, the area of the red code stunning part =;

Two pieces of blue area are put together into a large rectangle, its length = 17 2, width = ; 】

<> look at the picture of the rock, the acres of the thick front of the wheel.

<> didn't know that there was no other answer to the chaotic road, so I just got one.

In the past, it was 200 meters per minute, and today it is 250 meters per minute, so today it is 4 minutes per line, which can save one minute, a total of 5 minutes, so today I traveled a total of 4x5 = 20 minutes, and the distance is 20x250 = 500 meters.

Equation 5 (250-200) 200 x250=5 1 4 x250=20x250=5000 meters.

If the teacher needs x minutes to reach the school, then the distance is 200*x, and if it is 250 meters per minute, then the distance is 250*(x-5)200*x=250*(x-5).

Solution x = 25 minutes.

Then the distance is 200*25=5000 meters.

The distance to the school is set at x meters.

From the title, x 200-x 250 5 60

x/20=300

x＝300×20

x＝6000

A: The distance to the school is 600 meters.

Solution: If there are x meters from Mr. Zhao Jun's house to the school, then:

x÷200-x÷250=5

x/200-x/250=5

5x/200×5-4x/250×4=5

5x/1000-4x/1000=5

5x-4x)/1000=5

x/1000=5

x=5×1000

x = 5000 meters.

Solution: 250x5 (250-200).

25 minutes. 200x25 5000 m.

A: The distance to the school is 5000 meters.

Set to arrive at school in x minutes on a normal basis, 200x=250(x-5).

x=25, so the distance is 25x200=5000 meters.

This is generally coding, you can arrange the grades by 1-6, the classes by 1-4, boys are 1-8, girls are 9-16, and the schools are arranged by ABCD, for example, Jinqiao Elementary School 1st grade 1 class 1 boy, is A111, and other similar. If you have other ways, you can also say it and refer to it together.

The athlete's number is a four-digit number.

The first place is: 1, 2, 3, 4 represent the four schools.

The second place is: 1, 2, 3, 4, 5, and 6 for grades 1 to 6, respectively.

The third place is: 1, 3, 5, 7, 2, 4, 6, 8 represent the four classes. The singular number represents the female student, and the even number represents the male student.

The fourth place is: 1, 2, 3, 4, 5, 6, 7, 8. Each represents 8 students.

For example, the first female student in the first class of the first grade of Jinshan School, number: 1111, and the first male classmate number: 1121.

The number of the first female student of the fourth school, Yucun Elementary School, is 4111, and the number of the last female student: 4678. The number of the first male classmate.

4121, the last male student number: 4688

1 The newspaper is a window to the world, and Dad opens it every day to see the scenery of the world.

2 When it rains, the car is like a lost child, wiping tears from its hands. Look at the scenery of the world.

"Newspaper" Newspaper is a window to the world, and Dad opens it every day to see the scenery of the world.

When it rains, the car is like a lost child, wiping tears from its hands.

It is the number that was added by mistake.

Restore the correct number, for.

The total number of two thousand is multiplied by two kilograms per person, then multiplied by eighty percent, or multiplied by ten divided by eight.