Math.3.NF.3d 3.NF.A.3.D

Common Core Standards Compare Fractions
Grade:	3rd Grade
Standard:	Math.3.NF.3d or 3.NF.A.3.D
Description:	Compare two fractions with the same numerator or the same denominator by reasoning about their size. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model.

3rd Grade Math - Compare Fractions Lesson

1 of 3 - view full lesson

When two fractions have the same denominator,
the fraction with the larger numerator is larger.

First, identify the fractions represented by the models.
The model on the left is divided into four equal parts, and two parts are shaded.
So, the model represents

\frac{2}{4}

The model on the right is divided into four equal parts, and three parts are shaded.
So, the model represents

\frac{3}{4}


$\frac{2}{4}$	$<$	$\frac{3}{4}$

\frac{2}{4} < \frac{3}{4}

is the correct comparison because:

•

\frac{2}{4}

and

\frac{3}{4}

have the same denominator, and 2 < 3.

• the model of

\frac{2}{4}

has less area shaded than the model of

\frac{3}{4}

Common Core Standards

Compare Fractions

Math.3.NF.3d or 3.NF.A.3.D