Elementary 6th Grade N Simple Math Problems! Close this issue in 1 day!

1)x*6/5=48000

2)x-1/5x-1/2x=

The results are calculated by yourself with a calculator. That's better.

Let's set July as x

x + 1/5 x = 48000

x = 57600

Let this shipment be x

1/5 x + =1/2 x

x = 8

1.Set x volumes bound in July: x*(1+1 5)=480000

2.Consider this shipment a total of x tons: 1 5x+

1) The bookbinding factory bound 48,000 books in August, 1 5 (one-fifth) more than in July, how many books were bound in July? (Solved with equations).

Solution: X volumes were bound in July.

x+1/5x=48000

x=57600

A: 57,600 copies were bound in July.

2) A batch of goods, the first day to transport 1 5 (one-fifth) of this batch of goods, the second day to transport away tons, at this time exactly half of this batch of goods, how many tons of this batch of goods in total?

Solution: Set up a total of x tons of cargo.

1 5x+x=8A: There are 8 tons of cargo in total.

1.Solution: X volumes were bound in July.

x+1/5x=48000

x=57600

2.Solution: Set up a total of x tons of cargo.

1/5x+x=8

79*2=158 km.

Whether it's a bike or a car.

Or high speed.

Departing from home at 8 a.m. and arriving at your destination at 10 a.m., it takes 2 hours and rides 79 kilometers per hour, for a total distance of 158 kilometers.

If you decide to arrive at your destination at 9:30 a.m., the ride time becomes hourly, and the distance traveled per hour is 158 km.

Length: 9 km (10 8) 18

Recalculate the speed: 18 km (10-9)=18

Get Answer: 18

12 km/h 9 km??? 2*9=18 18 divided by kilometers per hour 18 is the total distance and then the distance is divided by time to get the velocity.

(10-8)*79%(km) Because the time is calculated as 2 hours when you depart at 8 o'clock and arrive at 10 o'clock. The speed is 79 kilometers per hour, and the time is multiplied by the speed to get the distance, because the time is advanced, from 2 hours to 1 hour and a half, that is, hours, so the distance can be divided to get the required speed.

1. (24) tons are 1 5 5 meters more than 20 tons, and 60 meters are 1 3 meters less than (80) meters

2. The price of a refrigerator is now 1 10 "lower than the original price", here (the original price) is regarded as "1", and the current price is the original.

3. The upper bottom of a trapezoidal shape is 1 6 meters, the lower bottom is 1 5 meters, the height is 1 2 meters, and its area is (11 120) square meters.

4. A section of timber is 6 meters long, 1 3 meters were used for the first time, 1 3 meters were used for the second time, and (2) meters remained.

Second, the calculation should be simple if it can be simple.

3. Solve the problem.

1. A bottle of drink, the first time to pour out the total number of 1 2, the second time to pour out the total number of 1 3, there are still 50 ml left, how many ml of this bottle of drink was original?

50÷（1-1/2-1/3）=300（ml）

2. The turnover of Parkson Mall in the first quarter was 52 million yuan, an increase of 1 10 in the second quarter compared with the first quarterWhat was the turnover in the second quarter?

5200 (1+1 10)=5720 (10,000 yuan).

3. Build a 500-meter-long canal, which has been repaired to a total length of 2 5, how many meters are left to be repaired?

500 (1-2 5) = 300 (meters).

4. The students planted trees in Qianling Mountain, 3 8 of the total number were planted on the first day, 1 3 3 were planted on the second day, 360 more trees were planted on the first day than on the second day, how many trees are there in this batch?

360 (3 8-1 3) = 8640 (trees).

1.24 90 (upstairs made a mistake) 2Originally 9 10

4.8 3 (wrong upstairs).

Calculate the approximate score (I also made a mistake upstairs, please review the question carefully).

5 8 10 9-5 8(3 4-1 2-3 8) 5 8 In the second paragraph, the two 5 8 in the second paragraph of the formula are reduced to 5 8*9 10-(3 4-1 2---3 8)=5 8*9 10+1 8=55 80=11 16

Work something out. 1.（x-1/2-1/3）=50ml

x = 300ml

2.x = 5200 * (1 + 1 10) = 57.2 million yuan 3 x=500*（1-2/5）=3004.x*(3 8-1 3)=360 x=8640.

24 90

Original price 9 10

3 and 2 35 8x1 9

6/8-4/8-3/8)x8/5

1/8x8/5

1.50 divided by (1-1 3) divided by (1-1 2) = 50x3 2x1 2

2. 5200x(1+10/100)

3. 500x(1-2/5)

500x3/5

3004.360 divided by (3 8-1 3) = 360 divided by 1 24

I'm in junior high school, adopt me.

Question 1: 24 tons 80 meters.

If you don't sit down, it's annoying, and you've got to do it again today.

It's so sad that kids can do it themselves.

Or find a girl to help you, so that you can cultivate sentiments, enhance friendships, learn to help each other, and kill seven or eight birds with one stone.

Let the first layer be x, and the second layer is 175-x, 1-4 7)x=(1-5 11)(175-x)33x=42(175-x).

x=98, then there are 77 books in the second layer.

Sum of side lengths: 104 4 = 26

The minimum side length is , and the sum of the minimum area is: 9+16+25+36+64=150.

The maximum side length is , and the maximum area is 1+4+9+16+256=286.

1.Before the first discount, each book is $ x.

2*[(3 5)*A*A*x*90%

x=22.A, B and C took a total of 24 days to complete.

B did it for a total of 7 days.

B = 600 (7 24) = 175 yuan.

A: B = 11:7 = 55:35

B: C = 5:2 = 35:14

So A:C = 55:14

Because the common multiple of 5 and 7 is 35

So the ratio of A, B, and C is 55:35:14

From this, we know that the ratio of A to C is: 55:14

There are two ways to do this:

1. Written in the form of a ratio: because they are all B, the number of parts of B should be the same, according to the basic nature of the ratio, A: B: C.

That is: A: B: C = 55 : 35:14 then A: C = 55:14 Second, the relationship between fractions:

If the ratio of A to B is 11:7, then A is 11 7 of B;If the ratio of B to C is 5:2, then B is 5 2 of C, then A is (11 7) * (5 2) = 55 14 = 55:14

The ratio of A and B is: 11 7, the ratio of B and C is: 5 2, then, the ratio of A, B and C is: 11*5 7*5 2*7 = 55 35 14, and the ratio of A and C is: 55 14

Let A be 11a, then B is 7a, because the ratio of B to C is 5:2, so C is 14a 5Therefore, A is 11*5 14, that is, 55:14

7 and 5 are divided, so the ratio of A and B is 55:35, and the ratio of B and C is 35:14, that is, the ratio of A and C is 55:14

Considering that you may not be able to use many unknowns, you can set the idea of the greatest and minor common multiples to be more concise.

Because A:B = 11:7; (1)

B: C = 5:2; (2)

Then the common multiple of B as an intermediate number is 35, that is, (1) the two sides are multiplied by 5, and (2) the two sides are multiplied by 7

A: B = 55:35;

B: C = 35:14;

So we can make A 55x, B 35x, C 14x, A:C = 55x:14x = 55:14

Solution: Let A, B, and C be x, y, and z respectively, and have x:y=11:7, y:z=5:2, then y:z=x:y*y:z=11:7*5:2=55:14

Answer: The ratio of A to C is 55:14

The ratio of B to C is 5:2, which means that B is 5 and 2 times that of C, and the ratio of A and C can be used to obtain that the ratio of A and C is 55:14

I have a book on the first few sides of this question, but I can't find it.

Make the ratio of two question B the same.

Both A:B = 55:35

B: C = 35:14;

i.e. A:B:C = 55:35:14

A: C = 55:14

7*5=35 then the ratio of A and B is 55:35, and the ratio of B and C is 35:14, so the ratio of A and C is 55:14

Let A, B, and C be x, y, z, x:y=11:7 y:z=5:2, so y=5, 2z, so x:y=x:5, 2z=11:7, so x:z=55:14

1. The outer diameter of a bicycle tire is, if the wheel turns 90 times per minute on average, how far can it go in 40 minutes? How many minutes does it take to cross a 567m bridge? （π=

40 minutes will do.

567 (min.)

It takes minutes to cross a 567m bridge.

2. The circumference of a circular flower bed is, and an area of 1 8 (one-eighth) is set aside in it to grow chrysanthemums. What is the footprint of a chrysanthemum?

The perimeter is radius =

Chrysanthemum covers an area =, 12m

3. The diameter of the locomotive driving wheel of a train is, if the average rotation is 300 times per minute, how many kilometers does the train travel per hour?

m = km. The train travels kilometers per hour.

1) 40*90*

banjing=16/2=8

mianjide1/8=

3) Rotation per hour = 300 * 60 = 18000 weeks.

m = km.

l=2∏r=2*

s=l*t*90=

t=567 (, I'm afraid I won't be able to finish riding in one minute.)

8 (m) squared =

square meters) one-half = square meters).

There may be an error in the number, but the equation is correct.

2πr*300*60

2*=169,560 meters=kilometers.

I'm using a phone, and here's the answer.

Multiply 90 by 40 = meters.

567 divided by (multiplied by 90) = minutes.

Question 2 (divide by 2) multiply (divide by 2) multiply by 1 8=

Question 3: Multiply by 300 by 60 by 1000 = km.

Units add their own! The answer is your own!

If 20 x = y, then this formula can become xxy = 20, which belongs to the product certainty, then x and y are inversely proportional;

2.If x = 4y, then this equation becomes x y = 4, which is a quotient (ratio) constant, so x and y are proportional.