Arrange these numbers from least to greatest:
3/5 , 5/7 , 2/9

Question

Arrange these numbers from least to greatest:
3/5 , 5/7 , 2/9

bananas1234 · Answer

my options are:

2/9, 3/5, 5/7
2/9, 5/7, 3/5
5/7, 3/5, 2/9
3/5, 2/9, 5/7

triciaal · Answer

one approach
more equivalent fractions
find the LCD of 5, 7 and 9 
find the appropriate equivalents then place on the number line
list from least to greatest

anonymous · Answer

It is the third one or C

bananas1234 · Answer

Would it be the second one? @triciaal

mathstudent55 · Answer

Use a calculator to find the decimal equivalents. Then you can compare quickly.

bananas1234 · Answer

Thats a good way to do it. @mathstudent55

triciaal · Answer

did not do it

triciaal · Answer

what is the lcd?

bananas1234 · Answer

wait....would it be A?

bananas1234 · Answer

3/5 = 189/315 
5/7 = 225/315 
2/9 = 70/315 
so the least is 2/9 then 3/5 and the 5/7

mathstudent55 · Answer

3 is a little more than half of 5, so 3/5 is more than 1/2.
5 is more than half of 7, so 5/7 is more than 1/2.
2 is much less than half of 9, so 2/9 is much less than 1/2.
For sure 2/9 is the smallest fraction.
Now just compare 3/5 to 5/7.

mathstudent55 · Answer

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