Find the LCD
What is the LCD of 8 and 2?
8
1/3 + 1/6 =
2/6 + 1/6 = 3/6 --> 1/2
3/4 - 1/2 =
3/4 - 2/4 = 1/4
What are 5 multiples of 3
3, 6, 9, 12, 15
What are 5 multiples of 4?
4, 8, 12, 16, 20
What is the LCD of 3 and 7?
21
6/20 + 10/20 = 16/20 --> 4/5
2/3 - 5/8 =
16/24 - 15/24 = 1/24
What are 5 multiples of 5
5, 10, 15, 20, 25
What is the LCD of 4 and 48?
48
What is the LCD of 4 and 14?
28
3/7 + 1/3 =
9/21 + 7/21 = 16/21
11/12 - 5/6 =
11/12 - 10/12 = 1/12
What are 5 multiples of 7
7, 14, 21, 28, 35
1/7 + 2/3 =
3/21 +14/21 = 17/21
What is the LCD of 9 and 4?
36
1/11 + 2/5 =
5/55 + 22/55 = 27/55
21/25 - 3/10 =
42/50 - 15/50 = 27/50
What are 5 multiples of 9
9, 18, 27, 36, 45, 54
9/10 - 7/8 =
45/40 - 35/40= 10/40 ->1/4
What is the LCD of 21 and 6?
42
1/8 + 7/9 =
9/72 + 56/72 = 65/72
11/15 - 1/6 =
22/30 - 5/50 = 17/30
What are 5 multiples of 12
12, 24, 36, 48, 60
10/12 - 3/8=
20/24 - 9/24= 11/24