3.NF.3:
Number And Operations - Fractions
Develop Understanding Of Fractions As Numbers.
Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.
3.NF.3a:
Number And Operations - Fractions
Develop Understanding Of Fractions As Numbers.
Understand two fractions as equivalent (equal) if they are the same size, or the same point on a number line.