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Anonymous users2024-02-10Least common multiple = a*b greatest common divisor.
So 90 = 30 * b 15
The solution is b=45
The greatest common divisor of the three numbers is: 15
Three consecutive odd numbers are 5,7,9, their greatest common factor is 1, the least common multiple is 3153 is a factor of 12, and 12 is a multiple of 3.
3 is a factor of 15 and 15 is a multiple of 3.
3 is a factor of 30 and 30 is a multiple of 3.
5 is a factor of 15 and 15 is a multiple of 5.
5 is a factor of 30 and 30 is a multiple of 5.
15 is a factor of 30 and 30 is a multiple of 15.
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Anonymous users2024-02-093.They are the greatest common factor of 1 and the smallest common multiple of 315
4.Group 1 3,12;
second group 3, 15, 30;
Third group 5, 15, 30
Fourth group 15,30
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Anonymous users2024-02-08b=,45,180 The least common divisor is 180
5,7,9 least common multiple 315
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Anonymous users2024-02-073 15 30 3 is a factor of 15 and 30, 30 is a multiple of 15 and 3, and 15 is a multiple of 3.
3 is a factor of 12 and 12 is a multiple of 3.
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Anonymous users2024-02-0645;15;1,315;12 is a multiple of 3, 15 is a multiple of 3, 30 is a multiple of 3, 15 is a multiple of 5, 30 is a multiple of 5, and 30 is a multiple of 15. Conversely, 15 is a factor of 30, and so on.
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Anonymous users2024-02-0512, 15, 30 are 3, 4, 5, 10 times, respectively.
15 30 is 3 6 times 5 respectively.
30 is 2 times more than 15.
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Anonymous users2024-02-04The least common multiple of two numbers is a multiple of the greatest common factor. And the greatest common factor of two numbers multiplied by the least common multiple is equal to the product of these two numbers.
Here are some examples:
6 and 126 and 12 The greatest common factor is 6.
The least common multiple of 6 and 12 is 12.
21 and 28 greatest common factor: 7
Least common multiple: 2 2 3 7 = 84
Extended Information: Finding the Greatest Common Divisor:
1) Use the method of decomposing prime factors to multiply the common prime factors.
2) Find the greatest common divisor of two numbers in the form of short division.
3) Special case: If two numbers are cogenetic, their greatest common divisor is 1.
If the lesser of the two numbers is the divisor of the larger number, then the smaller number is the greatest common divisor of the two numbers.
Method of least common multiple:
1) Using the method of decomposing prime factors, multiply the prime factors common to these two numbers and the unique prime factors of each number.
2) Find it in the form of short division.
3) Special case: If two numbers are coprime, then the product of these two numbers is their least common multiple.
If the greater of the two numbers is a multiple of the smaller number, then the larger number is the least common multiple of the two numbers.
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Anonymous users2024-02-03The least common multiple of several numbers is a multiple of the greatest common factor of these numbers.
The greatest common factor is the product of the prime factors common to these numbers, and the least common multiple is the product of the common prime factors and the unique prime factors.
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Anonymous users2024-02-021: Find: 15,20,25 and the greatest common multiple?
2: The greatest common divisor of the two composite numbers is 1, and the least common multiple is 36, find these two numbers.
3: The greatest common divisor of two prime numbers is: The least common multiple is: (fill in the blank).
4: There are three numbers that are mutual, their least common multiple is pure 4 per mu, and the maximum common multiple of the two numbers are: 24, 40, 60, find these three numbers.
5: The least common multiple of the two numbers is 300, and the greatest common divisor is 15. ,10,1、 A box of apples is divided equally between 8 and 10 people, just after the distribution, how many apples are there in this box at least?
2. Xiaodong goes to the library every 3 days, Xiaojing goes to the library every 5 days, and if she goes at the same time on March 20, the next time she goes at the same time is ( ) month ( ) day?
Think about it with 3 questions: Is () and () related? What does it matter?
What exactly are you looking for? It is divided into 3 steps, and several students repeat it to deepen their understanding and memory of the problem-solving steps. The teacher takes the camera and writes the process of solving the problem in detail.
This is where I want to learn.
5 will do.
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Anonymous users2024-02-011.Greatest common factor: also known as the greatest common divisor, refers to the largest of the common divisors of two or more integers.
2.Least common multiple: is a common multiple of several numbers, called the common multiple of these numbers, where the smallest common multiple except 0.
3.The product of two numbers is equal to the product of the greatest common divisor and the least common multiple of these two numbers.
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Anonymous users2024-01-31Knowing the greatest common factor and the least common multiple, how to calculate these two numbers as 1, the product of these two numbers = the greatest common factor and the minor common multiple.
2. Both of these numbers are factors of least common multiples.
3. Both of these numbers are multiples of the greatest common factor.
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Anonymous users2024-01-30If the greater number is a multiple of the smaller number, then their greatest common factor is (the lesser of these two numbers).
Analysis: If the two numbers are multiples, the greater of the two numbers is the least common multiple of the two numbers, and the smaller number is the greatest common factor of the two numbers.
For example, 3 and 15, because 15 is 5 times 3, the least common multiple of 3 and 15 is 15, and the greatest common factor of 3 and 15 is 3.
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Anonymous users2024-01-29The lesser of these two numbers.
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Anonymous users2024-01-28The least common multiple is a number that can be divided by two numbers at the same time, e.g. .
The least common multiple of 20 and 32 is 5*32=160,160 20=8,160 32=5.
The common multiple of 33 and 3 is 3*11=33,33 3=11,33 33=1.
The greatest common factor is the maximum value of the factors of 2 numbers, for example:
The greatest common factor of 30 and 20 is 32 4 = 8, 20 4 = 5, and 4 is their greatest common factor.
The greatest common factor of 33 and 3 is 33 3 = 11, 3 3 = 1, and 1 is their greatest common factor.
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Anonymous users2024-01-27Tingting is 54 centimeters per step, and Dad is 72 centimeters per step.
The least common multiple of 54 and 72 is 216
So for every 4 steps Tingting, Dad takes 3 steps. will coincide one step.
That is, for every 4 steps of Tingting, Dad takes 3 steps. Only 4+3-1=6 footprints.
There were 60 footprints in total, and this happened 10 times.
Tingting walked a total of 40 steps, and her father walked 30 steps. The circumference of the flower bed is 40x54 = 2160cm =.
If it is just right, the last footprint should coincide with the place where you first started, so there is no need to consider the footprints at the beginning, of course, the answer to this question should be like this, and it is not necessary to be too serious. 】
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Anonymous users2024-01-26The least common multiple of 54 and 72 is 216So for every 4 steps Tingting, Dad takes 3 steps. will coincide one step.
That is, for every 4 steps of Tingting, Dad takes 3 steps. Only 4+3-1=6 footprints. There were 60 footprints in total, and this happened 10 times.
Tingting walked a total of 40 steps, and her father walked 30 steps. The circumference of the flower bed is 40x54 = 2160cm =.
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Anonymous users2024-01-2524＝1×24＝3×8
35 is not a multiple of 24 1 23, 35 is a multiple of 8 3 5.
The greatest common divisor of these two numbers is 35 5 7
These two numbers are: 3 7 21, 8 7 56
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Anonymous users2024-01-2422 and 3(1).
21 and 7 (7).
38 and 10(2).
44 and 12(4).
15 and 70 (5).
13 and 51(1).
27 and 90 (9).
17 and 85 (17).
I also just calculated, I may be wrong, after all, I haven't done this kind of question for a long time, please forgive me for being wrong
The least common multiple of 8 and 7 is 56.
The least common multiple refers to the common multiple of two or more integers called their common multiple, where the smallest common multiple other than 0 is called the least common multiple of these integers. The least common multiple of the integers a,b is denoted as [a,b], and similarly, the least common multiple of a,b,c is denoted as [a,b,c], and the least common multiple of multiple integers is also denoted by the same notation. >>>More
First, write out the prime factors of two numbers, and the least common multiple is equal to the product of all their prime factors (if there are several prime factors that are the same, compare which of the two numbers has more of that prime factor, and multiply more times). That is, if there are duplicate prime factors, take the group with the most, and multiply the non-repeating prime factors. >>>More
Find the least common multiple of 4 and 6: 12
Process: Divide by 2 (non-1 least common divisor) at the same time to get 2, 3, no non-1 least common divisor, stop, the least common multiple is 2*2*3=12 >>>More
Motivating employees to give shares is the most difficult thing to do, and doing a good job can have the effect of getting twice the result with half the effort, on the contrary, how many shares you can give and how much to give, you need to think twice.