LCM of 20 and 42
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What is lcm of 20 times 42 ?
To get the least common multiple of 20 and 42, we we need to get the factors of each value first and then multiply all the factors together.
Prime factors of 20 = 2 2 5
Prime factors of 42 = 2 3 7
To get the lowest common multiples of 20 and 42, we combine the factors and select the least occurance.
Which is 2 2 5 and 2 3 7 combined and unique values selected to give answer
(2 2 5 ) (2 3 7 ) = 2 2 3 5 7
LCM is gotten by multiplying the least common factor of 2 2 3 5 7 together to get LCM of 20 and 42 = 420
LCM of 20 and 42 = 420
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Calculate lcm of 20 and 42
Prime factors of 202 2 5 Prime factors of 422 3 7 LCM of 20 and 42420 |
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The lcm of 20 and 42 is the least positive integer values that divides the numbers 20 and 42 without a remainder, which is the lowest common multiples of 20 and 42. we have elaborated the lcm of 20 and 42, with the method of computing it easily using the calculator above and selecting least common multiple from the factors of 20 and 42. Once factors of 20 = 2 2 5 is determined and factors of 42 = 2 3 7 is ascertained, lcm of Twenty and Forty two can be determined easily.
To compute the lcm of two numbers easily, you can do that using our calculator tool. Our calculator tool computes lcm of Twenty and Forty two easily. All you need to do is to enter the values on the form and the click calculate to compute lcm.
Use of LCM of Twenty and Forty two
Answer: LCM of Twenty and Forty two is used in solving fractions of numbers that has different denominators with these numbers and fine a common denominator for the with the lcm.
How is the usage of least common factor of numbers like Twenty and Forty two important?
Answer: It is used for subtracting and adding fractions denominator and numerator easily like 2/20 and 3/42. You can do this by getting lcm of the dividends and multiply to the numerator to get your values. Then you can then add or minus, depending on the mathematical operation you are carrying out.
What is Multiplication?
Answer:Multiplication is one of mathematics four elementary arithmetic operations. The others are addition, subtraction and division. Multiplication is denoted by the multiplying sign x.
What is the difference between multiplication, division, addition and subtraction?
Answer:Multiplication is multiplying a given value by the second value, it is denoted by sign x, division is dividing given value by the second value, it is denoted by sign /, Addition is adding of numbers together, it is denoted by sign +, Substraction is subtracting values from another number, it is denoted by -.
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