Answer:
Less than 3:
B
Between 3 and 4:
D, A, F
Greater than 4:
C, E,
Explanation:
I'm going to assume that you already understand basic addition and subtraction.
The way to properly subtract and add mixed numbers or fractions with different denominators (The number at the bottom) is to try and transform them so that they have the same denominator. I'll do B since I personally believe that it's the most challenging.
For the transformation, the denominator of the transformed fractions should ideally be the lowest common multiple (LCM) of the two original denominators of the two fractions because it'll create a smaller number for a denominator and won't require simplification later. To guarantee a common denominator, we'll take the both of the fractions and multiply their numerator (The number at the top) and their denominator by the denominator of the other fraction.
3 * 3 2 * 5
_ - _
5 * 3 3 * 5
9 10
_ - _ = - 1/15
15 15
4 - 1 - 1/15 = 2 14/15