5th Grade · Number & Operations—Fractions
Regrouping Fractions
5.NF.A.1
Definition
Rewriting a mixed number by borrowing one whole as a fraction so subtraction is possible.
Examples
- 3 1/4 becomes 2 5/4 by borrowing 1 whole as 4/4.
- 5 1/3 becomes 4 4/3 by borrowing 1 whole as 3/3.
Key rule
Borrow one whole (as a fraction) when the top fraction is too small to subtract.
Memory hook
Borrow a whole, break it into fraction pieces.