Who will have a few 6th grade math problems and who will have a 6th grade math problem?

The park should build a square flower bed and spread a 2-meter-wide lawn around the flower bed, the area of the lawn is 96 square meters, how many square meters is the total area of the flower bed and lawn?

The Earth's equator is an approximate circle, the radius of the equator is about 6378 kilometers, suppose there is a rope along the Earth's equator close around a circle, now increase the rope by meters, so that there is an even gap between the rope and the ground, can a snail with a height of 4 cm lie through the gap? Could you please name the reason?

1.Solution: Set the edge length of the flower bed to x, then.

x+4)^2-x^2=96

x^2+8x+16-x^2=96

8x=80x=10 sTotal = (10+4) 2=196 square meters.

To calculate and answer:

1: The engineering team built a 2,400-meter-long road, and repaired 40% of the total length in 6 days. (in 2 ways).

2: A and B are 485 kilometers apart, passenger cars and trucks depart from A and B at the same time, and go in opposite directions, passenger cars travel 85 kilometers per hour, trucks travel 65 kilometers per hour, after a few hours the two cars are 35 kilometers apart?

3: A steel pipe is 300 cm long, the outer diameter is 10 cm, the inner diameter is 8 cm, how many kilograms does this steel pipe weigh (each cubic gram weighs inside, and the number is kept to 2 decimal places).

Divide by (2400 divided by 40% divided by 6).

2400 divided by (960 divided by 6).

2400 divided by 160

15 days 2Solution: It should take x days.

2400 divided by x = 2400 times 40% divided by 6

2400 divided by x = 960 divided by 6

2400 divided by x = 160

x = 2400 divided by 160

x=15 2.(485-35) divided by (85+65) 450 divided by 150

3.(10 by 10-8 by 8).

100-64) ride.

36 rides. Multiply.

I thought about it casually and gave it a try:

There are 100 lights numbered 1 to 100 in a tunnel, and from one end of the tunnel comes a team of 100 people, numbering the people in order, the first to come first, and the last to number 100. If everyone who comes in pulls the lights that are multiples of their own numbers, for example, the first person pulls all the lights, and the second person pulls all the lights, until the last person pulls the number 100 lights, please ask, if the lights are on at the beginning, then after all 100 people have passed through the tunnel, which lights are on and which are off.

Grade 6 math problem to find the volume of a cone:

The small proprietor's drying field has a conical grain pile with a bottom diameter of 6 meters and a high level, what is its volume?

Answer: 6 2 = 3 (m).

3 1 (cubic meter).

1/12-1/20=1/30

Divide by (1 20-1 30) = 540,000 words.

1 12 is the total speed of A and B, the total speed - the speed of A = the speed of B, is the amount of A more than B, 1 20 (the speed of A) - 1 30 (the speed of B) = 1 60 (the difference in speed, is a fraction) The amount divided by the score = the total number of words in the manuscript.

Solution: The manuscript is designed to be a total of x 10,000 words.

Then A hits every hour.

x 20 A 12 hours hit.

12x/20

B hit for 12 hours.

12x so x=12x 20+12x

Solution: x = A: The manuscript is 10,000 words.

Treat all words as unit 1

B's efficiency: 1 12-1 20 = 1 30

The score of 12 hours A more than B typing: (1 20-1 30) 12 = 1 5 This score corresponds to 10,000 words, and the number of words is divided by the corresponding score: 10,000 words.

Running water 1There is a boat that travels in a 120-kilometer river, and it takes 10 hours to go against the road and 6 hours to go forward, and find the speed of the boat and the speed of the water.

Answer: Countercurrent velocity: 120 10=12 Note that the unit is omitted.

Forward velocity: 120 6 = 20

Speed: (20+12) 2=16

Water velocity: (20-12) 2=4

Answer: Slightly.

1.Class 62 has 12 divided by 1/4 = 48 (person) 2cubic decimeter = 8600 cubic centimeters.

3.50 ml = 1/20 ml.

4.15 liters = 15 cubic decimeters.

5.liters = 1,600 ml.

6.cubic meters = 3500 cubic decimeters.

7.4520 cubic decimeters = cubic meters.

8.3 cubic decimeters, 50 cubic centimeters = 3050 cubic centimeters, 973 ml = 73 cubic centimeters.

10.8800 cubic centimeters = liters.

11.cubic meters = 3 cubic meters 600 cubic decimeters.

12.cubic decimeter = 5 cubic decimeter 160 cubic centimeter 13830 liters = 830,000 cubic centimeters = cubic meters.

1 12*4=48 (person).

1011 3 cubic meters 600 cubic decimeters, 12 5 cubic decimeters, 160 cubic centimeters.

13 830,000 cubic centimeters cubic meters.

People cubic centimeters.

liters cubic decimeters.

milliliters cubic meters.

Cubic centimetre. Cubic centimetre.

liters cubic decimeters.

Cubic centimetre. Cubic centimeter = cubic meter.

Divide by a quarter, 600 cubic decimeters in cubic meters, 160 cubic centimeters in cubic decimeters

Solution: (1) If the average height is recorded as 0 cm, the height of the 5 students is Fang: 142-145=-3

Fat: 144-145=-1

Ming: 145-145=0

Huan: 146-145=1

Miao: 148-145=3

Answer:.. 2) If Xiaofang's height is recorded as 0 cm, how to represent the height of these 5 classmates: 142-142=0

Fat: 144-142=2

Ming: 145-142=3

Huan: 146-142=4

Miao: 148-142=6

Answer:..

If the average height is recorded as 0 cm, Xiaofang is 142 cm tall, 3cm lower than the average height, recorded as -3cm Xiaopang is 144 cm tall, 1cm lower than the average height, recorded as -1cm Xiao Ming is 145 cm tall, equal to the average height of 3cm, recorded as 0cm Huanhuan is 146 cm tall, 1cm higher than the average height of 1cm, recorded as 1cm Miao Miao is 148 cm tall 3cm below the average height, recorded as 3cm (2) If Xiaofang's height is recorded as 0 cm.

Xiaofang is equal to the average height and is recorded as 0cm

Xiaopang is 144 cm tall, 2cm taller than the average height, recorded as 2cm Xiaoming is 145 cm tall, 3cm higher than the average height, recorded as 3cm Huanhuan is 146 cm tall, 4cm higher than the average height, recorded as 4cm Miao Miao is 148 cm tall 5cm higher than the average height, recorded as 5cm

Xiaofang is -3 cm high, Xiaopang is -1 cm high, Xiaoming is 0 cm high, Huanhuan is 1 cm high, and Miao Miao is 3 cm high.

Xiao Pang is 2 cm tall, Xiao Ming is 3 cm high, Huanhuan is 4 cm high, and Miao Miao is 6 cm high.

(1) Subtract 145 from each person's height.

2) Subtract 142 from each person's height.

1.50 decreased by 10, decreased by (20) 40 increased by 10, increased (25).

2.Eight percent = 15 to (24) = ( ) = ( ) = ( 40) 64 =

3.This year's student population is one-eighth higher than last year's, and the following statement is wrong (b).

a This year's student population is equivalent to last year's.

b Last year's student population was equivalent to this year's.

c Last year's student population was equivalent to eight out of nine this year.

4.One of the obvious features of the fan chart is that it can clearly represent the relationship between (part) and (whole).

5.The original price of a pair of leather shoes is 50 yuan, and it is only sold for 40 yuan.

1) 40 50 100 means (the selling price is a few percent of the original price).

2) (50-40) 50 100 means (the selling price is a few percent less than the original price).

3) 50 40 100 means (the original price is a few percent of the selling price).

6.A bottle of oil weighs one-half kilogram and uses 25

1) 25 in half indicates (how many kilograms of oil is used).

2) One half (1-25) indicates (how many kilograms of oil are left).

1.50 decreased by 10, decreased by (20) 40 increased by 10, increased (25).

2.5/8 = 15 to (24) = ( ) = (40) 64 =

3.This year's student population is one-eighth higher than last year's, and the following statement is wrong (b).

a This year's student population is equivalent to last year's.

b Last year's student population was equivalent to this year's.

c Last year's student population was equivalent to eight out of nine this year.

4.One of the obvious features of the fan chart is that it can clearly represent the relationship between (partial) and (total).

5.The original price of a pair of leather shoes is 50 yuan, and it is only sold for 40 yuan.

1) 40 50 100 means (the current price is a few percent of the original price).

2) (50-40) 50 100 indicates (a decrease of a few percent).

3) 50 40 100 means (the original price is a few percent of the current price).

6.A bottle of oil weighs one-half kilogram and uses 25

1) 25 in 2 indicates (how many kilograms are used).

2) One half (1-25) indicates (how many kilograms are left).

1. If you look at 50 balls, everyone can shoot 5 balls, 51 will not work, at least one student will have to throw 6 balls.

2. You see, 37 people, there are only 12 genera in total, it is obviously impossible for you to have different genera for everyone, at most once every twelve people, and when you reach the 36th person, it will be three times, and there will be three people who are at least the same, then 37 people have one more, and the other 36 people have all the genera, and the last person will be the same as three of them no matter what the genus is, so there are 4 people.

1 If you don't have one person who shoots 6 goals, then 10 people will have 50 goals at most, and you won't be able to reach 51 goals, so at least one student will make 6 goals.

2 At least 3 37 divided by 12 = 3 1 11 genera have 3 people 1 genus has 4 people This is the minimum number of the same number.

It's so boring for me.

1) Even if 10 people put in 5 goals, there are only 50 goals in total, so there must be 1 person who puts in 6 goals.

2) At least 4 people.

1. If all students shoot less than 6 balls, then the maximum number of shots that meet the assumption is 50, which contradicts the original question of 51, so at least one person has made at least 6 balls.

2. The genus phase is cycled with 12, and if you want to make the least number of people with the same genus, you must make the maximum number of cycles, and the maximum number of cycles is 3 times, and there is one person left, so there are at least 4 people whose phase is the same.

This is the simple drawer principle. 51 divided by 10 is 5 more than 1, so at least one student scored six goals.

At least 4 of any of the 37 people are of the same genus.