The higher the denominator, the smaller the parts. For example, the following five fractions are in order from least to greatest:
However, when ordering
, you may notice that the second of those two has a higher numerator. In this particular case, that means that 
is the smallest of the fractions given.
Since there are only two different denominators left now, it is easiest to make the demoninators the same.
2 X 7 = 14
5 X 7 = 35
3 X 7 = 21
3 X 5 = 15
7 X 5 = 35
The remaining fractions are
Those three fractions are actually
Therefore, in order of smallest to largest, the fractions are
However, when ordering
Since there are only two different denominators left now, it is easiest to make the demoninators the same.
2 X 7 = 14
5 X 7 = 35
3 X 7 = 21
3 X 5 = 15
7 X 5 = 35
The remaining fractions are
Those three fractions are actually
Therefore, in order of smallest to largest, the fractions are