What is the least common denominator of the four fractions listed below
20 7/10
20 3/4
18 9/10
20 18/25
Looks like 100 to me.
No smaller number is a multiple of 4,10,25.
okay thanks steve
To find the least common denominator (LCD) of these four fractions, we need to determine the smallest common multiple of the denominators.
First, let's list out the denominators of the fractions:
10, 4, 10, 25
To find the LCD, we need to find the smallest number that is divisible by all these denominators.
We can start by listing the multiples of each denominator:
Multiples of 10: 10, 20, 30, 40, ...
Multiples of 4: 4, 8, 12, 16, ...
Multiples of 10: 10, 20, 30, 40, ...
Multiples of 25: 25, 50, 75, 100, ...
By comparing these lists, we can see that the smallest number that appears in each list is 20. Therefore, the least common denominator of the four fractions is 20.