Help me solve my first grade math problems

Exclusion. If A is true, then B is broken, then C's words are also true, exclude.

Assuming that B is true, then D is broken, then C's words are also true, exclude.

Assuming that C is true, A and B are false, according to their judgment, it is not B and D, but note that D is saying that B is lying, and if C is true, D is also called the truth, so it is excluded.

So d is the truth, and c is broken.

This kind of problem needs to be analyzed from the two people who speak contradictory.

In this case, B and D

If B tells the truth, then A lies are true, C is not true when he tells a lie, contradiction!

So D is telling the truth, A is telling a lie, proving not B, B is telling a lie, proving that it is not D, C is telling a lie, and it means that it is C

Analysis: The words of D and B are contradictory, there must be one truth and one falsehood, then A and C both tell lies.

And he csaid, 'I did not break it.' ”

wherefore it was cbroken.

It was cbroken. c broke it, so it didn't break it, and therefore it was lying. And C is lying when he says he didn't break it. D is correct when he says that B is lying.

Suppose A is telling the truth, then C must be telling the truth, so A must be telling a lie.

Suppose B told the truth, then C must not have lied, so B also told a lie.

Suppose C is telling the truth, then B must be telling a lie, so D is telling the truth, which is a contradiction, so C is also telling a lie.

Suppose D tells the truth and there is no contradiction, so D breaks it.

If A tells the truth, A contradicts C.

If B speaks the truth, B contradicts C.

If c speaketh the truth, he is abroken.

If D is telling the truth, it becomes that A is saying that B is not broken, B is saying that D is not broken, C is saying that I am broken, D is saying that B is lying, that is, D is broken, contradicting C.

Assuming in turn, there are contradictory explanations that the assumptions are not valid, then we can know that D is right and C is broken.

Summary. Dear, what is the problem you want to solve? Is it an application problem in math <>

For example, let's give you a question like this, now there are six birds in the tree, three of them have flown away, and there are a few left, so we can list the equation 6-3=3 (only) Answer: There are 3 birds left. If that's not the case with your question, you can send us the correct question<>

Problem solving in the first grade of primary school.

Dear, what is the problem you want to solve? Is it a practical problem in the study of the number of pi beams [open key grip or heart] For example, let's tell you a problem like this, now there are six birds in the tree, three flew away, and there are a few left, so we can list this formula 6-3=3 (only) Answer: There are still 3 birds left.

If that's not the case with your question, you can send us the correct question<>

Okay dear, see it.

Dear, you have a blank that you haven't filled, and that one that hasn't filled the blank can be filled in 6 times <>

The problem to be solved is how many jumps Xiao Yu has made less than Jiajia now.

It's one less mouthful. Dear, the one you asked for is filled in with 6

Good. Good.

Dear, the top part of your ** is a little unclear, and I will now help you answer the part of the <> that I can see clearly

Dear, the information given in the question you are asking is very important, and to call Hui to imitate the chain of questions, we need to make full use of each condition, and we need to sort out the information. This process requires some careful <>

Happy answer], I wish you a happy life!

1. True/False:

A two-digit number, with the highest digit being a single digit. (

The meaning of the two 6's in 66 is the same, both represent 6 ones.

XXXVI Writing 306. (

The minute hand on the clock face went from 1 to 4 for 3 minutes. (

8:7 can be written as 8:7.

It's 8:50 a.m., and it's 9:05 a.m. in 15 minutes. (

2. Fill-in-the-blank questions:

The RMB in angles has () jiao, ( jiao, () jiao. The renminbi in cents is divided into () cents, () cents, and () cents.

A two-digit number, the number in the ten digit is 6 greater than the number in the single digit, and the number in the single digit is smaller than 1, and this two-digit number is ().

The highest digit of 100 is the ( ) digit; 1 is in the ( ) position, which means ( ) ( ).

The nearest integer number to 34 is ( ).

The single digit of 74 is ( ) for ( ) and the ten digit is ( ) for ( ).

There are ( ) numbers that are larger than 10 and smaller than 20, where the number with the same single digit and the number with the same ten digits is ( ).

Write three two-digit numbers with 0 ( ) Write three two-digit numbers with 9 ( ) Write three single-digit numbers and ten digits with the same two-digit number ( ).

Two identical cubes can be put together into one; At least () small cubes of the same kind can be put together into one large cube; A minimum of ( ) small squares of the same kind can be put together into one large square.

On the clock face, the hour hand moves 1 large block is 1 ( ), and the minute hand goes 1 large block is 5 ( ).

Sixty is written (), which is smaller than the largest two-digit number ( ).

The number that precedes 39 is ( ), the number that follows it is ( ) and the two numbers adjacent to 99 are () and (). The third number after 28 is ( ).

1 of the 100 is greater than 1 of the 10 ( ).

I walk by ( ) and my car by ( ).

A square piece of paper is folded in half twice to get a total of ( ) small squares; There are a total of ( ) squares.

The largest one-digit number is ( ) The smallest two-digit number is ( ) The largest two-digit number is ( ) The smallest three-digit number is ( ).

The difference between 80 and 4 in a row is: (

The 4 numbers in front of 80 are ( )18The minute hand on the clock face points to 12, the hour hand is just over 5, and the current hour is (: can also be expressed as (hour).

Fifty problems are solved in the first grade.