Equivalent Fractions
1 x
____ = ____
2 4
x = 2
What is the LCD for:
3 2
____ , ____
4 12
12
1 1
____ + ____ =
2 4
3
__
4
1 1
____ - ___ =
2 4
1
___
4
What is a denominator?
The number below the line in a fraction.
3 2
____ = ____
6 x
x = 4
What is the LCD for:
1 5
____ , ___
6 9
18
1 2
____ + ___ =
6 3
5
___
6
2 1
____ - ___ =
3 6
3
_____
6
What is a numerator?
The number above the line in a fraction.
1 x
____ = ____
9 27
x = 3
What is the LCD for:
2 4
____ , ___
5 6
30
1 3
____ + ___ =
5 10
5
____
10
1 1
____ - ___ =
4 6
1
___
12
What does equivalent mean?
Equal in value or the same in value.
6 12
____ = ____
12 x
x = 24
What is the LCD for:
8 3 2
____ , ____ , ____
10 4 5
20
2 7
____ + ___ =
7 14
11
_____
14
2 2
____ - ___ =
7 8
2
_____
56
What is a common denominator?
When the bottom number of the fraction is the same for both fractions.
x 3
____ = ____
8 6
x = 4
What is the LCD for:
3 2 1
____ , ____ , ____
5 4 3
60
3 2
____ + ___ =
6 8
18
_____
24
7 2
____ - ___ =
8 12
17
___
24
What is the answer to an addition problem? What is the answer to a subtraction problem?
Sum and difference