1. There are two wooden sticks, 24m and 18m long respectively. Cut them into small sections of the same length. No surplus is allowed. How long is each section? 2. Students do radio gymnastics, each line of 7 people or each line of 8 people have no surplus, at least how many students? 3. Edge of cube (), area of each surface () 4453 square decimeters = () (add a few parts to the preceding brackets)

① The greatest common factor of 24, 18 is 6
A: each section is 6 meters long
② The least common multiple of, 7 and 8 is 56
A: at least 56 students
③ The edge length of cube is equal, and the area of each face is equal
④ 453 square decimeters = 53 / 4 and 100

Practical problems (two problems, formula solution)
1. In the school sports meeting, athletes need 720 number cloths. There are 5 / 4 (four fifths) number cloths in the safekeeping room. How many more number cloths need to be customized?
2. A man bought a stock. The next day after he bought it, the stock fell by 10 / 1. The man said, "it doesn't matter. Will it return to its original position soon after it rises by 10 / 1 tomorrow?" is the man right? Why?

720 * (1-4 / 5) = 144 (sheets)
No, the first day: 1 * (1-1 / 10) = 0.9
The second day: 0.9 * (1 + 1 / 10) = 0.99
0.99 is not equal to 1, so it's not right

250 liters equals () cubic centimeters

250 liters is equal to (250000) cubic centimeters

Solving practical problems with a series of equations in elementary school (online, etc.)
50 kg of 60% alcohol solution was prepared from 90% and 45% alcohol solution. 90% and 45% alcohol solution were expressed by X and Y respectively. The values of X and y were calculated

x=50/3kg
y=100/3kg

Simple calculation of 0.027 + 99 * 0.27

=0.27*（1+99）
=0.27*100
=27
I hope my answer can help you,
In the upper right corner of my answer, click [adopt answer],

If x-x-2 = 0, find the value of x-x + 2 radical 3 / (x-x) - 1 + radical 3

X-x-2 = 0, x = 2 or x = - 1, then calculate the value of x-x + 2 radical 3 / (x-x) - 1 + radical 3 when x = 2, and the value of x-x + 2 radical 3 / (x-x) - 1 + radical 3 when x = - 1

I'm from grade one of junior high school. I'm the one who extracted the common factor
One minus (one-half of the square) multiplied by one minus (one-third of the square) multiplied by one minus (one-quarter of the square)
Then according to this rule, multiply and subtract (one tenth of the square) at the end

Original question = (1-1 / 2) (1 + 1 / 2) (1-1 / 3) (1 + 1 / 3) (1-1 / 4) (1 + 1 / 4) -- (1-1 / 10) (1 + 1 / 10)
=1/2*3/2*2/3*4/3*3/4*5/4-------9/10*11/10
=1/2*11/10
=11/20

39 times 6 / 13 =? 23 times 15 / 23 =?

18
fifteen

Writing experience success
It takes 800 words

Caption: hardship and frustration are the teachers of life. Some people fall down in the face of setbacks, some people shrink back, and some people rush up to overcome difficulties and overcome setbacks. Such people are the strong ones in life; such people will experience the happiness of success! After reading "holding up the sun in my heart", I feel deeply in my heart! Especially

How to fill in the form of question 13 on page 104 of mathematics book of grade five of primary school? (Jiangsu Education Press, Haimen primary school)

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