Elementary school 2nd grade math problems, come and solve them with good grades

Let the first, second, third, and fourth numbers be a, b, c, d, then a+2=b-2

b-2=c×2

c×2=d÷2

So b-a=4

b=2c+2

d=4ca=b-4=2c-2

As long as c is given a value, the rest of the solutions are consistent as long as they match the equation.

I think it's better to fill in the third blank first, and if the third blank is 1, then the equation is equal to 2Clause.

One, two, and four empty are respectively;

If the 3rd blank is filled with 2, then the equation is equal to 4Clause.

One, two, and four empty are respectively;

If the 3rd is blank 3, then the equation is equal to 6.

One, two, and four empty are respectively; That is to say, the third empty is added to the original basis by 1, then the first.

One, two, and four empty spaces are respectively added on the original basis

2 plus 2 equals 4 minus 0 equals 2 times 2 equals 4 divided by 2

Fill in whatever you want, as long as it can make the formula valid

As long as the equation is true, you can fill in as many as you want. The key is to examine the relationship between inverse operations.

4）+2=6=（8）-2=（4）x2=（12）/2

0）+2=（4）—2=（1）x2=（4）÷2 （2）+2=（6）—2=（2）x2=（8）÷2

There are not necessarily many answers.

It is impossible to be equal, it can be 2 6 3 8

Super Seven Big Hello.

2)+2=(6)-2=(2)x2=(8)÷2

Hopefully.

It is obviously not possible to fill in the equal numbers, because it is impossible.

The following 0x2=0 2=0, yes, the front x+2=x-2 is unsolvable.

So fill in the unequal numbers, there are many answers.

I guess it's the fourth and fifth.

Because I looked closely, there seemed to be three aliens.

There seem to be three of them in this option, so I chose two images as aliens.

Observationally, aliens have a common feature, a small triangle and three antennae, and only the 4th figure below fits, so it should be the 4th.

It's too much of an intellectual test!

I'll give it to A first, and then to B.

This way they can pay for 2 books themselves.

Then I took the money I was given and went back to the total dollar.

The rest is that the total amount of money they originally had was exactly the money of a book (title), that is, a book.

Solution: Because A money + book money, A money + B money = book money.

So B money = the same way, because B money + book money, B money + A money = book money.

So A money = to sum up: book money = A money + B money = yuan.

By drawing a line diagram, you can see:

If B gives money to A, then B's money is yuan.

Use B's money to buy the difference, and add A's money is just right, then A's money is yuan. The money for this book is.

If the book asks for yuan, A is yuan, and it meets the conditions for using A's money to buy the difference yuan.

If the book still needs yuan, B is yuan, and using it meets the condition of using B's money to buy the difference yuan.

A and B's money together is just enough to buy this book, the key.

Use A's money to buy the difference, and B's money to buy the difference. Precondition.

So meta.

Because A + B + the money of two books, it is now known that A + B = the money of one book, so the money of the other book.

I'll give it to A first, and then to B, so that they can pay for 2 books by themselves, so that they can pay for 2 books by themselves, which is to say one book.

Explain that B has a yuan, and A has a yuan, so this book is a yuan) Answer: This book is yuan.

It's that simple.

Just add them up and you're good to go.

My students can do it.

Not all questions are solved with equations, but they can be combined with equations to explain the same as recommended answers.

60 1 3 56. After taking out 1 yellow one and 3 red ones, there are 56 56 6 1 left

8 , at this time there are 8 yellow glass balls.

8 1 9 pcs, there were originally 9 yellow glass balls.

60 9 51 , there were originally 51 red glass balls.

There are x yellow glass balls and y red glass balls.

According to the question: x+y=60

6(x-1)=(y-3)

The solution is x=9 y=51

After testing, xy is the solution of the equation and conforms to the question.

A: There are 9 yellow glass balls and 51 red glass balls.

Take 4 balls and left: 60-1-3 = 56 (pcs) Yellow and: 56 (6 + 1) = 8 (pcs).

There is also red: 8x6=48 (pcs).

It turns out that yellow: 8 + 1 = 9 (pcs), red: 48 + 3 = 51 (pcs).

Hello, I think there should be two answers to the question bai, one is zhi6000, and one dao is 2000 meters.

First of all, let's talk about 6000 meters, well, 6000 meters is mainly to say, this school bookstore is in the same direction, and, first, from your home to the school, and then to the school to this, the bookstore, so this answer is 6000 meters, and 2000 meters, 2000 meters This answer, is how it came from, well, the school is 2000 meters away from the bookstore, maybe this bookstore is, um, the school and this, Li Li's, in the middle, So this is 2000 meters. I don't know if I'm answering correctly, I hope you can do it yourself, check and review, and if it's right, I hope you can adopt it?

If the bookstore is between Xiaoli's house and the school, then Xiaoli's house to the bookstore is 4000 - 2000 is equal to 2000 meters. If the school is in the middle of the bookstore and Xiaoli's house, then it is equal to 2000 plus 4000 equals 6000 meters.

Xiaoliang 12 beans can be divided into 2 parts of 6 or 3 parts of 4 pieces. 2 points + 3 points = 5 points.

Kohei 10 beans can be divided into 2 points 5 pieces or 5 points 2 pieces. 2 points + 5 points = 7 points.

Xiaoliang: 12 can be divided into 2 parts: 6 6 2 points.

Can be divided into 3 parts: 4 4 4 3 points for cumulative score: 2 + 3 = 5 points.

Xiaoping: 10 can be divided into 2 parts: 5 5 2 points.

Can be divided into 5 parts: 2 2 2 2 2 5 points.

Cumulative score: 2+5=7 points.

Xiaoliang 12 beans can be divided into 2 parts equally, or it can be divided into 3 parts equally, so 2+3=5

Xiaoping 10 beans can be divided into 2 equal parts, or 5 equal parts, so 2+5=7

Xiaoliang: 4 pieces in each group, divided into 3 groups, 3 points; 6 capsules per group, divided into 2 groups, 2 points; A total of 5 points will be scored.

Xiaoping: 5 pieces in each group, divided into 2 groups, 2 points; 2 capsules per group, divided into 5 groups, 5 points; A total of 7 points were scored.