A few elementary school math questions, troublesome, ask a few elementary school math questions

1.Solution: Think of the solution in the whole cup as the unit "1".

After drinking 1 2 first, it is equivalent to drinking 1 2 milk.

And fill it with water, which is equivalent to 1-1 2 = 1 2 milk in the cup, and 1-1 2 = 1 2 water.

After drinking 1 3 again, it is equivalent to drinking 1 2 * 1 3 = 1 6 milk, 1 2 * 1 3 = 1 6 water.

Now, there is still 1 2-1 6 = 1 3 milk, 1 2-1 6 = 1 3 water.

Fill it with water, which is equivalent to adding 1-1 3 (milk)-1 3 (water) = 1 3 water.

At the end, it is equivalent to drinking 1 3 more milk, 1 3 + 1 3 = 2 3 water.

So, I drank a total of 1 2 + 1 6 + 1 3 = 1 milk.

Drank a total of 1 6 + 2 3 = 5 6 water.

Because, 1 is greater than 5 6, that is, drink more milk.

Because, 1-5 6=1 6, drink more milk than water 1 62Solution: If there are x male workers in this factory, there will be (135-x) female workers.

Because, the sum of two-thirds of the number of male workers and four-fifths of female workers is 98 List the equation: 2 3x+4 5(135-x) = 98 solution: x = 75 (male workers).

135-x = 135-75 = 60 (female workers).

So, there are 75 male workers and 60 female workers.

It may be a little verbose, forgive ......

1.Drink as much as you pour in.

Milk is a cup.

Water is poured 1 2 for the first time and 1 3 for the second time, and a total of 1 2 + 1 3 = 5 6 cups are poured in.

So 1 6 cups more milk.

2.If there are x male workers, then 135-x female workers.

2/3*x+4/5*(135-x)=98

Solution x=75

A: There are 75 male workers and 60 female workers.

1.Lots of milk. One sixth more. A total of one cup of milk was drunk, while water was added first to a half cup and then a third of a cup, so a total of five sixths of a cup was added, so one sixth less than milk.

2.There are 75 male workers and 60 female workers, and if there are x male workers, there will be 135-x female workers, and the equation is: 2 3x+4 5(135-x)=98, and the solution is x=75

1.Milk is drunk in one glass, water is one-half plus one-third, water is five-sixths of a glass, so milk is drunk more, one-sixth more.

2.There are 75 male workers and 60 female workers.

The number A is two-fifths of the number B, and the number B is ( ) times the number A?

The number A is three-eighths of the number B, the number B is the number of A (eight-thirds), the ratio of the number A to the sum of the numbers A and B is (8:11), and the number B is the sum of the numbers A and B (three-thirds of the eleven).

Two-fifths of the total number of students in Class 62 is girls.

There are 50 students in Class 62.

How many boys are there?

50*(1-2/5) = 30 (person).

There are one-fifth more boys than girls, and boys are girls (six out of five), and girls are less than boys (one-six)?

A train takes 5 seconds to get on an iron bridge from the moment the locomotive arrives at the bridge, and all of them leave the bridge after 26 seconds. Knowing that the total length of the bridge is 525 meters, find the speed of the train when crossing the bridge? Asking for the full length of the train?

525 (26-5)=25 speed.

25*5=125 full length.

There are a bunch of black and white pieces, and the black pieces are twice as many as the white pieces. Now from this pile of chess, take out 5 black pieces and 4 white pieces at a time, and wait until you take it several times, the white pieces are taken out, and there are 15 black pieces, how many black and white pieces are there?

4*2=8 sunspots should be taken 8 at a time to be exactly finished.

8-5=3 Take 3 sunspots less each time.

15 3=5 was taken 5 times.

5*4=20 white seeds.

20*2=40 sunspots.

Squared * 20 = 1570

squared * 17=

Question 2. radius = 9 2=

Square * third problem solution: **x yuan.

x=120

Hello! 1.There is a fraction where the numerator plus 1 can be reduced to a quarter of the simplest fraction, and the denominator minus 1 can be reduced to a fifth of the simplest fraction, and this fraction is (3 16).

2.A natural number n is divided by 10 by 9, by 9 by 8, by 8 by 7, by 7 by 6, by 6 by 5, by 5 by 4, by 4 by 3, by 2 by 1, and the minimum value of n is (2519).

3.Xiaohua participated in the language competition, and the product of her results, her age and her ranking was 3069, with a full score of 100 points. What is Xiaohua's age, grades and ranking?

Xiaohua is 11 years old, 93 points, third place.

1. Three-sixteenths (3 16).

x+1)/y=1/4

x/(y-1)=1/5

Find the least common multiple from 1 to 10 and subtract 1

3. Age: 11 Result: 93 Rank: 3

Hello Q friend, what do you want to ask? Is there anything I can help you?

Questions. These 4 questions are all asked.

Question 1: 3 16 Question 2 Question 3 Age 11 years old, rank 3, score 93

=3*3*11*31 Age: 11 years old Score: 3*31=93 points: 3rd