Write an equivalent fraction with a given denominator.49=?27\frac49=\frac{?}{27}

49=1227\frac49=\frac{12}{27}94=2712

49=1627\frac49=\frac{16}{27}94=2716

49=727\frac49=\frac{7}{27}94=277

49=927\frac49=\frac{9}{27}94=279

Write an equivalent fraction with a given denominator.107=?28\frac{10}{7}=\frac{?}{28}

107=4028\frac{10}{7}=\frac{40}{28}710=2840

107=1428\frac{10}{7}=\frac{14}{28}710=2814

107=7028\frac{10}{7}=\frac{70}{28}710=2870

107=3028\frac{10}{7}=\frac{30}{28}710=2830

Write an equivalent fraction with a given denominator.83z=?18z\frac{8}{3z}=\frac{?}{18z}

83z=4818z\frac{8}{3z}=\frac{48}{18z}3z8=18z48

83z=3218z\frac{8}{3z}=\frac{32}{18z}3z8=18z32

83z=14418z\frac{8}{3z}=\frac{144}{18z}3z8=18z144

83z=2418z\frac{8}{3z}=\frac{24}{18z}3z8=18z24

4. Fractions

Finding The Least Common Denominator

4. Fractions

Finding The Least Common Denominator: Videos & Practice Problems

Video Lessons Worksheet

Concept

Finding The Least Common Denominator

Video duration:

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Follow along with each video using our printable worksheets

Problem

Find the least common denominator of each set of fractions.
$three eighths comma 5 over 12$

$12$

$16$

$24$

$48$

Problem

Find the least common denominator of each set of fractions.
$- \frac{2}{9}, \frac{7}{15}$

$90$

$15$

$135$

$45$

Problem

Find the least common denominator of each set of fractions.
$one fifth comma one seventh comma 7 over 14$

$70$

$140$

$490$

$35$

Problem

Find the least common denominator of each set of fractions.
$\frac{1}{3 x}, \frac{7}{12}$

$12x$

$36x$

$18x$

$24x$

Problem

Find the least common denominator of each set of fractions.
$\frac{2}{8}, \frac{9}{15 y}, \frac{3}{20}$

$60 y$

$120 y$

$160 y$

$20 y$

Problem

Find the least common denominator of each set of fractions
$- \frac{1}{15 y}, \frac{1}{90 y}$

$90y$

$180y$

$135y$

$45y$

Concept

Writing Equivalent Fractions With A Given Denominator

Video duration:

Example

Writing Equivalent Fractions With A Given Denominator Example 1

Video duration:

Problem

Write an equivalent fraction with a given denominator.
$\frac{4}{9} = \frac{?}{27}$

$\frac\)49=\(\frac{12}{27}$

$\frac\)49=\(\frac{16}{27}$

$\frac\)49=\(\frac{7}{27}$

$\frac\)49=\(\frac{9}{27}$

Problem

Write an equivalent fraction with a given denominator.
$\frac{10}{7} = \frac{?}{28}$

$\frac{10}{7}\)=\(\frac{14}{28}$

$\frac{10}{7}\)=\(\frac{70}{28}$

$\frac{10}{7}\)=\(\frac{40}{28}$

$\frac{10}{7}\)=\(\frac{30}{28}$

Problem

Write an equivalent fraction with a given denominator.
$\frac{8}{3 z} = \frac{?}{18 z}$

$\frac{8}{3z}\)=\(\frac{32}{18z}$

$\frac{8}{3z}\)=\(\frac{144}{18z}$

$\frac{8}{3z}\)=\(\frac{24}{18z}$

$\frac{8}{3z}\)=\(\frac{48}{18z}$

Problem

Rewrite the fraction below as an equivalent fraction with a denominator of 36.
$\frac{4}{9} = \frac{?}{?}$

$\frac\)49=\(\frac{16}{36}$

$\frac\)49=\(\frac{36}{81}$

$\frac\)49=\(\frac{31}{36}$

$\frac\)49=\(\frac{36}{31}$

Problem

Rewrite the fraction below as an equivalent fraction with a denominator of 36.
$\frac{1}{3} = \frac{?}{?}$

$\frac\)13=\(\frac{9}{36}$

$\frac\)13=\(\frac{12}{36}$

$\frac\)13=\(\frac{3}{36}$

$\frac\)13=\(\frac{4}{36}$

Problem

Rewrite the fraction below as an equivalent fraction with a denominator of 36.
$\frac{2 z}{12} = \frac{?}{?}$

$\frac{2z}{12}\)=\(\frac{12z}{36}$

$\frac{2z}{12}\)=\(\frac{2z}{36}$

$\frac{2z}{12}\)=\(\frac{6z}{36}$

$\frac{2z}{12}\)=\(\frac{3z}{36}$

Your Prealgebra & Beginning Algebra tutors

Physics and Math Lead Instructor

Finding The Least Common Denominator: Videos & Practice Problems

Finding The Least Common Denominator

Find the least common denominator of each set of fractions.38,512\(\frac\)38,\(\frac{5}{12}\)

Find the least common denominator of each set of fractions.−29,715-\(\frac\)29,\(\frac{7}{15}\)

Find the least common denominator of each set of fractions.15,17,714\(\frac\)15,\(\frac\)17,\(\frac{7}{14}\)

Find the least common denominator of each set of fractions.13x,712\(\frac{1}{3x}\),\(\frac{7}{12}\)

Find the least common denominator of each set of fractions.28,915y,320\(\frac\)28,\(\frac{9}{15y}\),\(\frac{3}{20}\)

Find the least common denominator of each set of fractions−115y,190y-\(\frac{1}{15y}\),\(\frac{1}{90y}\)

Writing Equivalent Fractions With A Given Denominator

Writing Equivalent Fractions With A Given Denominator Example 1

Write an equivalent fraction with a given denominator.49=?27\(\frac\)49=\(\frac{?}{27}\)

Write an equivalent fraction with a given denominator.107=?28\(\frac{10}{7}\)=\(\frac{?}{28}\)

Write an equivalent fraction with a given denominator.83z=?18z\(\frac{8}{3z}\)=\(\frac{?}{18z}\)

Rewrite the fraction below as an equivalent fraction with a denominator of 36.49=??\(\frac\)49=\(\frac{?}{?}\)

Rewrite the fraction below as an equivalent fraction with a denominator of 36.13=??\(\frac\)13=\(\frac{?}{?}\)

Rewrite the fraction below as an equivalent fraction with a denominator of 36.2z12=??\(\frac{2z}{12}\)=\(\frac{?}{?}\)

Your Prealgebra & Beginning Algebra tutors

Find the least common denominator of each set of fractions.
$three eighths comma 5 over 12$

Find the least common denominator of each set of fractions.
$- \frac{2}{9}, \frac{7}{15}$

Find the least common denominator of each set of fractions.
$one fifth comma one seventh comma 7 over 14$

Find the least common denominator of each set of fractions.
$\frac{1}{3 x}, \frac{7}{12}$

Find the least common denominator of each set of fractions.
$\frac{2}{8}, \frac{9}{15 y}, \frac{3}{20}$

Find the least common denominator of each set of fractions
$- \frac{1}{15 y}, \frac{1}{90 y}$

Write an equivalent fraction with a given denominator.
$\frac{4}{9} = \frac{?}{27}$

Write an equivalent fraction with a given denominator.
$\frac{10}{7} = \frac{?}{28}$

Write an equivalent fraction with a given denominator.
$\frac{8}{3 z} = \frac{?}{18 z}$

Rewrite the fraction below as an equivalent fraction with a denominator of 36.
$\frac{4}{9} = \frac{?}{?}$

Rewrite the fraction below as an equivalent fraction with a denominator of 36.
$\frac{1}{3} = \frac{?}{?}$

Rewrite the fraction below as an equivalent fraction with a denominator of 36.
$\frac{2 z}{12} = \frac{?}{?}$