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If a is a factor of b, b is a multiple of a. 3 is a factor of 9. 9 is multiple of 3.
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∙ 7y ago
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When you do LCD in math do you use multiples or factors?
multiples: Least Common Multiple
When is it useful to use factors and multiples?
Factors are useful when you're trying to reduce fractions. Multiples are useful when you're trying to find a least common denominator.
When can you use common multiples and factors?
Use the LCM when you are adding and subtracting unlike fractions. Use the GCF when you are simplifying fractions.
How do you use prime factorization to find three common factors and three common multiples?
you multiply them together
What multiples of 72 can be added to get 21?
All multiples of 72 are greater than 21. If you're looking for factors of 72, use 9 and 12 or 18 and 3
Examples of units you can use to measure mass?
Some examples of units used to measure mass include kilograms (kg), grams (g), pounds (lb), and ounces (oz).
What multiples of 24 add up to 19?
There aren't any. All multiples of 24 are greater than 19. If you mean factors, you can use 12, 6 and 1 or 8, 6, 3, 2.
What is the least common factor of 4 and 14 using lists of multiples?
You won't find common factors by using lists of multiples. The least common factor of any set of integers is 1, no matter what you use.
What are strategies for finding factors and multiples?
It would help to have a few specific examples as I am not sure how much depth you want to go into. To find all of the factors of a big number, I find the square root of that number and round down. Then all factors must be equal to or lower than that square root. eg To find the factors of 1200, the square root is 34.6. Round down to 34. Any factors of 1200 must be 34 or less. Then I just try starting from 2 (1 is always a factor), I try to divide by all of the numbers up to 34. Some will not work. So factors of 1200 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30. To find multiples, use multiplication tables. e.g. multiples of 7 are 7, 14, 21, 28 etc. If you want Lowest Common Multiples, and Greatest Common Factor, then that involves different process.
Why do you use centimetres to measure the length of a ladybug?
I would use a millimetre, but since the SI system allows simple conversions for multiples of ten and factors of ten, that is simply a presentational detail.
What is a use of factors and multiples?
I cannot say that nowadays with the use of calculators and computer that we 'need' to figure out the factors of a number in real life. One use I can think of is to splitting the bill among friends. In school, the use would be during an exam, it would be handy to break large numbers into smaller ones when you are asked to simplify a fraction. One other practical use is approximation. Sometimes I want to check whether my calculator results make sense -- I can use factors and multiples to reduce the numbers to their simplest form and get an approximate answer. Other times, I just need an approximate answer in my head without the benefit of a calculator.
What are some multiples of 21 and 17?
I think you mean some common multiples. Since 17 is prime, there are no common factors of 17 and 21. Now the first common multiple will be 21x17. You can use more 21s or more 17s to find additional multiples. Here is one 17x21x21 Here is another 17x17x21
