subtract fractions practice
identify the missing like denominator in the subtraction expression 3/5 -1/?
To subtract fractions, the denominators must be the same.
In the expression 3/5 - 1/?, the denominator of the second fraction is missing.
To find the missing denominator, we can look for a number that is a common multiple of 5 and ?.
One possible common multiple of 5 and ? is 10.
Therefore, the missing denominator is 10.
To identify the missing like denominator in the subtraction expression 3/5 - 1/?, you need to compare the two denominators and find a common denominator that both fractions can be converted to.
In this case, the first fraction has a denominator of 5. To find a common denominator, you need to consider the factors of 5 and the other denominator. Since the second denominator is missing, we can assume it is a whole number. Starting from 1 and working upwards, we can find the least common multiple (LCM) of 5 and the unknown denominator.
The multiples of 5 are: 5, 10, 15, 20, ...
To find the least common multiple, you should continue listing multiples of 5. Once you find a multiple that is divisible by the unknown denominator, you have found the common denominator.
Let's list the multiples of 5 until we find a suitable denominator:
1 x 5 = 5
2 x 5 = 10
3 x 5 = 15
4 x 5 = 20
Since the second fraction's denominator is missing, and 5 is already one of the multiples we found, the missing denominator is 5. Therefore, the missing fraction can be written as 1/5.
So, the subtraction expression 3/5 - 1/? can be written as 3/5 - 1/5.
To subtract fractions, you need to have a common denominator. In this case, the missing like denominator is the same as the denominator of the first fraction, which is 5. So the subtraction expression becomes:
3/5 - 1/5
Now that the fractions have the same denominator, you can subtract the numerators while keeping the denominator the same:
(3 - 1)/5 = 2/5
Therefore, the result of the subtraction expression 3/5 - 1/? is 2/5.
it was 5
Apologies for the confusion. If the missing denominator is 5, the subtraction expression becomes:
3/5 - 1/5
Now that the fractions have the same denominator, you can subtract the numerators while keeping the denominator the same:
(3 - 1)/5 = 2/5
Therefore, the result of the subtraction expression 3/5 - 1/5 is 2/5.