What's Up
The part of a fraction, that indicated the number of equal parts into which the unit is divided; divisor.
Denominator
Are these equivalent fractions?
6/18 ?= 2/9
14/35 ?= 2/5
No divide 3/ divide 2
Yes
Over the weekend Mike ate 1/4 box of cereal, and Josh ate 3/8 of the same box. What portion of the box of cereal did the eat in all?
5/8
A fraction with the same amount of parts, just expressed with different numbers.
Equivalent fractions
A number expressed in parts of a whole.
A fraction.
5/12 + 1/4 =
8/12 or 2/3
Nikki bought 2/3 yard of fabric. She used 1/4 yard for a sewing project. How much fabric did she have left?
5/12 yards of fabric
The term of a fraction, that indicates the number of equal parts that are to be added together; the dividend placed over a divisor.
Numerator
1/9 + 5/6 =
51/54 or 17/18
Jack went on a hike, he hiked 1/6 of a mile, decided to go a different way and hiked 4/7 of a mile before he had to stop. How far did he hike altogether?
31/42 of a mile
8/8 -4/9=
40/72 or 5/9
To bring down to a smaller extent, size, amount or number.
Reduce
Kayla had 9/10 gallon of paint. She painted the ceilings in her bedroom and bathroom. The bedroom took 2/3 gallon and bathroom took 1/5 gallon. How much paint does she have left after painting the two ceilings?
1/30 of a gallon
The smallest number that a set of fractions have in common before you can add or subtract.
Least or lowest common denominator
7/8 - 1/3 =
13/24
Jim wants 1/2 of a rectangular pan of cornbread. Joe want 1/3 of the same pan of cornbread. How much cornbread will be left?
1/6
(1/3 +1/4) +3/8 =
23/24
Jamie bought 4/6 yard of pipe. She used 1/2 yard to repair a water line in her house. How much pipe does she have left?
1/6 yard
7/8 - 3/6 =
9/24 or 3/8
8 1/4 - 2 5/12 =
5 10/12 or 5 5/6
17 1/5 - 4 6/7 =
2 12/35
12 - 4 4/5 =
7 1/5
8 2/5 - (3 2/3 +2 3/5)=
2 2/15
Lindsay used 1 1/4 gallons of tan paint for the ceiling and 4 3/7 gallons of green paint for the walls of her kitchen. How much paint did Lindsay use in all?
5 19/28 gallons of paint
(7 2/3 + 3 4/5) - 1 4/15=
10 3/15 or 10 1/5