Mathematics
Grade5
Easy
Question
Subtract 
.
Hint:
In this question we have to subtract two fractions for that we have to make denominator same this can be done by taking LCM. LCM is the least common multiple of two integers. We will use the prime factorization method to find the LCM. In prime factorization method the simply put the factor of each number and then for LCM we take product of factors by considering the repeated factors only one time with highest exponent.
The correct answer is:
Step1: First we will write all the prime factors of the denominators
In this question the denominators are 
and 
.
Factors of are:
Factors of are:
Step2: For calculating the LCM we will multiply the factors by considering the common factors only one time with the highest exponent.
In this case there is no common factor so we will multiply all the factors
LCM (,) = 
LCM (,) = 
Step3: Now what we do is divide the LCM by each denominator and multiply the numerator by quotient and then subtract them
So, 
and 
So, we will multiply the numerator of by and numerator of by .
So, the answer of is .
Related Questions to study
Mathematics
A recipe needs 
teaspoon black pepper and 
red pepper. _____more black pepper is needed than red pepper for this recipe.
A recipe needs teaspoon black pepper and red pepper. _____more black pepper is needed than red pepper for this recipe.
MathematicsGrade5
Mathematics
Add 
.
Add .
MathematicsGrade5
Mathematics
Subtract 
.
Subtract .
MathematicsGrade5
Mathematics
Angela's team practiced soccer for 
of an hour on Wednesday, and for of an hour on Friday. The total number of hours the team spent practicing soccer is _________.
Angela's team practiced soccer for of an hour on Wednesday, and for of an hour on Friday. The total number of hours the team spent practicing soccer is _________.
MathematicsGrade5
Mathematics
Subtract 
.
Subtract .
MathematicsGrade5
Mathematics
Brian's team practiced soccer for 
of an hour on Wednesday, and for 
of an hour on Friday. His team practiced _________hours for soccer altogether.
Brian's team practiced soccer for of an hour on Wednesday, and for of an hour on Friday. His team practiced _________hours for soccer altogether.
MathematicsGrade5
Mathematics
Add 
.
Add .
MathematicsGrade5
Mathematics
Kevin ate 
of a pie. Michael ate 
of a pie. Find the amount of pie Kevin ate more than Michael.
Kevin ate of a pie. Michael ate of a pie. Find the amount of pie Kevin ate more than Michael.
MathematicsGrade5
Mathematics
Add 
.
Add .
MathematicsGrade5
Mathematics
Kevin ran mile on Monday, and 
mile on Tuesday. He did run _________miles altogether
Kevin ran mile on Monday, and mile on Tuesday. He did run _________miles altogether
MathematicsGrade5
Mathematics
Charles ate of the plum cake in the morning and of the cream cake in the evening. Find the amount of cake he ate in all.
Charles ate of the plum cake in the morning and of the cream cake in the evening. Find the amount of cake he ate in all.
MathematicsGrade5
Mathematics
Add 
.
Add .
MathematicsGrade5
Mathematics
Michael ate 
of cheese pizzas and of pepperoni pizzas. He did eat ________ pizza in all.
Michael ate of cheese pizzas and of pepperoni pizzas. He did eat ________ pizza in all.
MathematicsGrade5
Mathematics
Add 
.
Add .
MathematicsGrade5
Mathematics
Karen added of a can of water to her aquarium. Sarah added 
of a can of water to the aquarium. Sarah adds ___________ water than Karen
Karen added of a can of water to her aquarium. Sarah added of a can of water to the aquarium. Sarah adds ___________ water than Karen
MathematicsGrade5
