How to subtract fractions - SSAT Middle Level Quantitative

"Borrow" 1 from the 9 to form . You can then subtract integers and fractions vertically:

Rewrite as the difference of improper fractions:

Rewrite with a common denominator, then subtract numerators:

Rewrite as a mixed number:

Rewrite as the difference of improper fractions:

Rewrite with a common denominator, then subtract numerators:

Rewrite as a mixed number:

so

"Borrow" 1 from the 5 to form . You can then subtract integers and fractions vertically:

Subtract vertically by aligning the decimal points, making sure you append the 8 with a decimal point and two placeholder zeroes:

By order of operations, subtractions and additions are carried out in left-to-right order, so subtract 1.73 from 7.89 first. This is best done vertically, aligning decimal points:

Now add 2.50 to the difference (note that a zero has been added to the end), again aligning vertically by decimal point:

Rewrite vertically, lining up the decimal digits. Subtract as you would two integers. (Note that you are appending zeroes to the 19.)

Rewrite the first fraction in eighths, as :

Write vertically:

Now "borrow" one from 7 and add it to the , then subtract integer and fractional parts separately:

Rewrite as a decimal:

, so

Now subtract:

When substracting one fraction from another, first find the common denominator, then subtract one numerator from another.

Seven tenths is equal to 0.7; seventeen hundredths is equal to 0.17. Subtract them, rewriting 0.7 as 0.70;

One hour and thirty-two minutes have elapsed since midnight. Since three hours and seventeen minutes make a greater quantity, we need to look at this as thirteen hours and thirty-two minutes having elapsed since noon.

We can subtract hours, then subtract minutes:

The time was 10:15 AM.

By the order of operations, carry out the multiplication first, then the leftmost subtraction, then the rightmost subtraction:

Since , we must rewrite each number as its equivalent in fourteenths, then subtract numerators, as follows:

Since , rewrite each fraction as its equivalent in fourteenths and subtract the numerators:

In order to solve this problem, we first have to find common denominators.

Now that we have common denominators, we can subtract the fractions. Remember, when we add and subtract fractions, we only add or subtract the numerator.

In order to solve this problem, we first have to find common denominators.

Now that we have common denominators, we can subtract the fractions. Remember, when we add and subtract fractions, we only add or subtract the numerator.

In order to solve this problem, we first have to find common denominators.

Now that we have common denominators, we can subtract the fractions. Remember, when we add and subtract fractions, we only add or subtract the numerator.