SSAT Upper Level Math : How to subtract fractions

Example Questions

Example Question #1 : How To Subtract Fractions

Janice had  of a cup of milk. If she used  cup to make some scrambled eggs, how much of a cup of milk does she have left?

Explanation:

Subtract the two fractions. To subtract them, they must have a common denominator. Multiply the numerator and denominator of  by  to create a common denominator of , then subtract the numerators and reduce the resulting fraction.

Example Question #1 : Operations With Fractions

What is the result of this operation?

Explanation:

Since the denominators are exactly the same, we can just subtract the tops.

So

By reducing we get

Example Question #3 : Operations With Fractions

What is the result of this operation?

Explanation:

Since the denominators are the same, we can just subtract the numerators.

So

Example Question #121 : Fractions

What is the result of this operation?

Explanation:

Since the denominators are the same, we can just subtract the numerators.

By reducing our result, we get

Example Question #191 : Number Concepts And Operations

What is the result of this operation?

Explanation:

Since the denominators are the same, we can just subtract the numerators.

The result can just be reduced to

Example Question #1 : Operations With Fractions

What is the result of the operation

Explanation:

Since the denominators are the exact same, we can just subtract the numerators.

Example Question #1 : Operations With Fractions

What is the result of this operation

Explanation:

Since the denominators are the exact same, we can just subtract the numerators.

Example Question #8 : Operations With Fractions

What is the result of this operation

Explanation:

Since the denominators are the same, we can just subtract the numerators.

which we can reduce to

Example Question #1 : Operations With Fractions

What is the result of this operation?

Explanation:

Since the denominators are different, we need to transform them into the same denominator.

So

becomes

Now subtract the numerators

Example Question #131 : Rational Numbers

What is the result of this operation