Fractions and Cross Multiplication

• = equivalent/equal

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CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

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CCSS.4.NF.A.2

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CCSS.4.NF.A.2

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CCSS.4.NF.A.2

The following are the distances of some places in town from the school:
Place      and    Distance

Library             3/5  mile

Post Office      1/2 mile

Park                 3/4 mile

Town Hall          8/10 mile

From least to greatest, what is the order of the locations from the school? (Make a model or cross multiply and compare.)

•  town hall (8/10 m.),< post office (1/2 m.) ,< library (3/5 m.),<  park (3/4 m.)

• library (3/5 m.),<  park (3/4 m.)<  town hall (8/10 m.),<  post office (1/2 m.

• post office (1/2 m.),<  library (3/5 m.),<  park (3/4 m.)<  town hall (8/10 m.)

•  town hall (8/10 m.) < ,library (3/5 m.),<  park (3/4 m.),<  post office (1/2 m.) 

$Nicolette\ needs\ \frac{1}{3}\ yard\ of\ fabric\ for\ her\ quilt.\$
Which are the equivalent fractions for 1/3? Mark all that apply. HINT: Cross multiply and compare.

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CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

$\frac{1}{8}\ is\ _{------\ than\ \frac{1}{2}}$

• less than 1/2

• equal 1/2

• greater than 1/2

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CCSS.4.NF.A.2

• less than 

• equal to 

• greater than 

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CCSS.4.NF.A.2

• less than 

• equal to 

• greater than 

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CCSS.4.NF.A.2

• less than 

• equal to 

• greater than 

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CCSS.4.NF.A.2