Least Common Denominators
What is the LCD of 1/2 and 1/4?
4
What is 1/3 + 1/5?
8/15
What is 2/9 - 1/18?
3/18 or 1/6
Convert into a mixed number: 13/4
3 1/4
How many hours did the most students spend reading?
2 1/2 hours
What is the LCD of 1/6 and 3/4?
12
What is 3/4 + 3/8?
9/8 or 1 1/8
What is 10/15 - 1/3?
5/15 or 1/3
Convert into a mixed number: 28/6
4 4/6 or 4 2/3
How many total students are represented on the line plot?
26 students
What is the LCD of 1/5 and 5/6?
30
What is 4/6 + 3/10?
29/30
What is 4/6 - 2/8?
10/24 or 5/12
Which expression is equivalent to 5/8 + 1/4?
A. 3/4 + 2/4 + 1/4
B. 5/8 + 2/8
C. 5/8 + 1/2 + 1/2
B. 5/8 + 2/8
Of the total students, how many read for 2 hours or more?
16 students
What is the LCD of 2/3 and 3/5?
15
What is 1 3/8 + 2 1/2?
3 7/8
What is 3 4/5 - 1 1/2?
Which expression is equivalent to 1 1/3 + 1 2/9?
A. 2 + 5/9
B. 1 + 1 - 1/3 + 2/9
C. 2 + 3/12
A. 2 + 5/9
Two students read for 2 3/4 hours. How many hours did they read altogether?
5 1/2 hours altogether
What is the LCD of 4/6 and 2/10?
30
What is 2 2/5 + 3 2/3?
6 1/15
What is 4 2/4 - 2 5/6?
1 8/12 or 1 2/3
Which expression is equivalent to 2 1/2 - 1 1/6?
A. 2 - 1 - 1/2 - 1/6
B. 2 - 1 - 3/6 - 1/6
C. 2 - 1 + 1/2 - 1/6
C. 2 - 1 + 1/2 - 1/6
Four students read for 1 3/4 hours. How many hours did they read altogether?
7 hours