(3)
1/6 + 1/2 =
1/6 + 3/6 =
4/6 =
2/3
c.
Add the following fractions:
(1)
1/3 + 5/12
=____+ ____= ____= ____
(2)
4/3 + 1/4
=____+____ = ____ = ____
(3)
7/8 + 3/4 + 1/12
=____+____ + ____ = ____ = ____
Answers: (1) 3/4,
(2) 1 7/12,
(3) 1 17/24
1-9. SUBTRACTING FRACTIONS
a.
Use the following steps when subtracting fractions:
STEP 1: Find a common denominator.
STEP 2: Subtract the numerators.
STEP 3: The denominators stay the same.
STEP 4: Reduce the answer to lowest terms, if necessary.
b.
For example:
Steps 2
Step 1
and 3
Step 4
(1)
1/2 - 1/4 =
2/4 - 1/4
=
1/4
(2)
1/3 - 1/4 =
4/12 - 3/12
=
1/12
*
(3)
4/10 - 1/5 =
___ -___
=
___
=
______
*This problem may be solved by either reducing the fraction 4/10 to 2/5 or by changing
the fraction 1/5 to have the common denominator of 2/10.
Answer: 4/10 - 1/5 = 2/5 - 1/5 = 1/5
Answer: 4/10 - 1/5 = 4/10 - 2/10 = 2/10 = 1/5
NOTE: The first method is preferred because you have reduced the 4/10 to 2/5,
thereby using the least common denominator and eliminating the reduction to lowest
terms in the final answer.
MD0802
1-9