Common Core Standards: 3.NF.3d

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Common Core For Grade 3

New York State Common Core Math Module 5, Grade 3, Lesson 29

Application Problem

Catherine and Diana bought matching scrapbooks. Catherine decorated 5/9 pages in her book. Diana decorated 5/6 of the pages in her book.

Use a tape diagram to show who has decorated more pages of their scrapbooks.

Concept Development

Draw 2 number lines. And label the endpoints 0 and 1.

Partition the first number line into eighths and the second one into tenths.

On the first number line, make an arrow to label 8/8 of the unit fraction. On the second number line, make an arrow to label 2 copies of 5/10

Give a sentence comparing the fractions using the words ‘greater than,’‘less than,’ or ‘equal to.’ They are equal because they have the same point on the number line. That means they’re equivalent.

Now write the comparison as a number sentence with the correct symbol between the fractions.

8/8 = 10/10

Directions: Label each shaded fraction. Use <, >, or = to compare.

Directions: Partition each number line into the units labeled on the left. Then, use the number lines to compare the fractions.

Draw your own models to compare the following fractions.

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