What’s the lowest common denominator out of 1 2/5, 2 2/4, and 3 4/10?
Can you also tell me the steps of how to get them. I’m practicing my fractions and I can’t get it
the LCD is 20
Since 4 and 5 have no factors in common, their LCD is just 4*5
As it happens, 20 is also a multiple of 10, so 10 doesn't change anything.
check out Least Common Multiple for integers. It's the same thing.
As it happens, your fractions can be reduced to 1 2/5, 2 1/2, and 3 2/5
The LCD for 1/2 and 1/5 is just 10.
In google type:
common denominator calculator
when you see list of results go on:
LCD Calculator - Least Common Denominator - Calculator Soup
Paste your numbers separated by commas and click on: Calculate
you will see solution with steps.
On - Calculator Soup you can practicing fractions.
Thank you!
To find the lowest common denominator (LCD) for fractions, you need to determine the least common multiple (LCM) of the denominators in the fractions. Here’s how you can find the LCD for 1 2/5, 2 2/4, and 3 4/10:
Step 1: Write the mixed numbers as improper fractions.
1 2/5 = (5 × 1 + 2)/5 = 7/5
2 2/4 = (4 × 2 + 2)/4 = 10/4
3 4/10 = (10 × 3 + 4)/10 = 34/10
Step 2: Determine the denominators.
The denominators of your fractions are 5, 4, and 10.
Step 3: Find the least common multiple (LCM).
To find the LCM, list the multiples of each denominator until you find a common multiple.
Multiples of 5: 5, 10, 15, 20, 25, 30, ...
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, ...
Multiples of 10: 10, 20, 30, ...
Here, you can see that the smallest number appearing in all three lists is 20. Therefore, the LCM of 5, 4, and 10 is 20.
Step 4: The LCM is the lowest common denominator (LCD).
So, the lowest common denominator for the fractions 1 2/5, 2 2/4, and 3 4/10 is 20.