Primary 2 Mathematics Problem 5 8 13 21 34

5+8=13，13+8=21，21+13=34.。。It's all obtained by adding the first two numbers, so it's very simple that the next number is 21+34=54... If you continue to count it in turn, I believe that the landlord will soon understand.

Starting from the third term, the latter item is the sum of the first two items: 5+8=13, 8+13=21, 13+21=34, and so on, so the following should be filled in: 21+34=55

The front should be 8-5=2, and if you continue to row at the back, it should be 55.

Longer should be lined up as .

Well, this question is not difficult, I'll teach you that the first number plus the second number equals the third number: 5+8=13 13+21=34 21+34=55 and so on. This kind of problem of finding a pattern has to be taken slowly, and you can sort it out and get a beautiful answer.

Eh: It's been a hard fight

From the third term onwards, the latter term is equal to the sum of the first two terms, e.g.: 13=5+8;21=8+13；34=13+21。。。And so on.

3 more between 5 and 8, 5 more between 8 and 13, 5 more between 13 and 21, and 13 more between 21 and 34

The latter term subtracts the previous term to get 3 5 7 11, and the difference between these is prime.

The first two numbers add up to the last number!! For example: 5 + 8 = 13 8 + 13 = 21 in order.

55 The sum of every two differences is the difference between the last two numbers.

The latter is the sum of the first two.

From the third term onwards, each term is the sum of the last two.

The number of additions is the sum of the first two additions.

The previous number plus 3 = the next number.

The odd number is 1, 3, 5, 7, so fill in the second parenthesis 9

The even number is 5, 10, 15, so fill in 20 in the first parentheses

（1）3

20 Both of these laws are viewed from a single digit.

The first can be separated: 3, 3, 3, (3) and 1, 3, 5, (7) and the second can also be separated: 0, 5, 10, 15, (20) and 2, 4, 6, (8) (the brackets in the explanation are the answers).

Summary. Find the pattern +52 + 32 + 21 + 12 (+)3

The answer is 10

Here are 4 common ways to solve problems. First, the serial numberWe put the known number and the corresponding serial number together to observe and compare, and the common ones are equal difference series. 2. The common factor method divides the given number into the least common factor and multiplies, and observes whether it is related to n, or 2n or 3n.

3. The number given by the first digit method subtracts, adds, or multiplies, or divides by the first digit at the same time to become a new sequence, and then finds the relationship with the serial number, and the law can be found. Fourth, the odd and even numbers are listed separately from the odd number position and the even number position to become two sequences, and then find out the law. Finding the pattern and filling in the number is a question type in the primary school mathematics common test, which mainly examines students' observation, thinking and computing skills.

2+3+5+7+8+10+11+17 Find a pattern in the second grade.

Hello classmates, 17 should be followed by 19.

First, the serial numberWe put the known number and the corresponding serial number together to observe and compare, and the common ones are equal difference series. Second, the common factor method divides the given number into the least common factor and multiplies, and observes whether the sale of Huna is related to n, or 2n or 3n. 3. The number given by the first digit method subtracts, adds, or multiplies, or divides by the first digit at the same time, to become a new sequence, and then finds out the relationship with the serial number, which can be found in the law.

Fourth, the odd and even numbers are listed separately from the odd number position and the even number position to become two sequences, and then find out the law. Finding the pattern and filling in the number is the question type of the primary school mathematics test, which mainly tests the students' observation ability, thinking ability and calculation ability.

Answer: 5+25=(5+25)*2=60

Because: 1+5=(1+5) *2=12

Or: 5+15=12*5=60

Because: 1+5=12*1=12

Note: The first digit is .The second number is 1*5, 2*5, 3*5....

Summary. Kiss Find the pattern (44-23) (22-12) (32-21) Kiss The number is 21

Find the law (44-23) (22-12) (32-?).Kiss Find the pattern (44-23) (22-12) (32-21) Kiss The number is 21

Okay, thanks

When looking for patterns in math problems, there are a few things to keep in mind that can help you solve them more effectively: Read the problem carefully: Make sure you fully understand the requirements and conditions of the problem.

Experiment with different values and situations to see if there is a pattern or pattern between them. Analyze sequences or graphs: If the problem involves sequences or graphs, try to analyze their characteristics and patterns.

Observe differences, ratios, or multiples in a series of numbers, or look at symmetry, repeatability, or patterns of change in a graph. Use math: Use the math you've already learned to solve difficult problems.

By observing and summarizing known examples, try to generalize a universal pattern. This makes it impossible to make some trial and error, but by summarizing each finding, you may find a general pattern. Try the recursive method:

Some problems can be solved by recursive methods. Recursion refers to breaking down a problem into smaller sub-problems and using the solutions of the sub-problems to derive the solution of the entire problem. Use Aids:

It's 22-12.

Kiss find the law (44-23) (22-12) (32-7).

Summary. 14 ()8 ()2 to find a pattern.

I've got you covered, I hope my answer helps!