Subtracting fractions and mixed numbers with unlike denominators and with regrouping

Let’s Review Regrouping What does it mean when we regroup to subtract two numbers? Basic Subtraction Regrouping

= = Fraction Regrouping If we can borrow one ten to make ten ones, then we can also borrow one whole to make fractions. = =

Subtracting with Regrouping 4 5 5 3 2 4 5 1 5 = 2 = One of these wholes must be broken up into fifths so that we subtract . 4 5

Subtracting with Regrouping 4 5 5 3 2 4 5 1 5 = 2 = How you break up the whole depends on the denominator.

= 5 5 2 2 2 Now, we can subtract. You can’t take away from . Answer: 1 2 2 4 5 3 4 5 3 4 2 = 2 2 4 One of the wholes must be broken up into fourths. 3 4 Now, we can subtract. You can’t take away from . Answer: 3 4 2

6 4 4 2 4 4 5 + 3 4 2 3 4 2 The method with picture…