Posted by dawn on .
the least common multiple of 3, 6,9 i say 18
Sheila practiced hours Monday, hours Tuesday, and hours Wednesday. What is the total number of hours that she practiced?
A) hours B) hours C) hours D) 6 hours
Complete the statement, using the symbol < or >.
0.6
A) > B) <
Jon spent of his study time doing math homework and preparing for a history exam. What fraction of his study time remains?
A) B) C) D)

math 
Ms. Sue,
Your first answer is correct.
But, you seem to have left out important information in the other two questions. 
math 
dawn,
1 1/2 hours 3 3/4 2 1/4 the anwers you can chose from are
a. 7 1/2 hours
b. 5 1/4
c. 8 1/2 hours
d. 6 hours 
math 
Ms. Sue,
1 1/2 + 3 3/4 + 2 1/4 =
1 2/4 + 3 3/4 + 2 1/4 = 6 6/4 = 7 1/2 
math 
dawn,
jon spent 1/3 of his time 2/7 preparing the following you can chose from A) 13/21 B) 5/21 C) 1/21 D) 8/21

math 
Ms. Sue,
1/3 + 2/7 = 7/21 + 6/21 = 13/21
21/21  13/21 = ??