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Contenido principal

## 3.NF.A.1

Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.

## 3.NF.A.2

Understand a fraction as a number on the number line; represent fractions on a number line diagram.

## 3.NF.A.2a

Represent a fraction 1/b on a number line diagram by defining the interval from 0 to 1 as the whole and partitioning it into b equal parts. Recognize that each part has size 1/b and that the endpoint of the part based at 0 locates the number 1/b on the number line.

## 3.NF.A.2b

Represent a fraction a/b on a number line diagram by marking off a lengths 1/b from 0. Recognize that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line.

## 3.NF.A.3

Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.

## 3.NF.A.3a

Understand two fractions as equivalent (equal) if they are the same size, or the same point on a number line.