# Think about how pattern blocks help to illustrate - PowerPoint Presentation

#### Think about how pattern blocks help to illustrate - Description

the common denominator used to add and Adding Thirds and Fourths Montgomery County Public Schools Maryland Curriculum 20 Grade 5 2012 1 Think about how pattern blocks help to illustrate ID: 512454 Download Presentation

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fourths add thirds twelfths add fourths twelfths thirds partitioning partition sixths pattern sum eighths denominator replaced common illustrate blocks

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## Presentation on theme: "Think about how pattern blocks help to illustrate"— Presentation transcript

Slide1

Think about how pattern blocks help to illustrate

the common denominator used to add and .

Montgomery County Public Schools, Maryland

Curriculum 2.0 – Grade 5 2012

1

+ = ___Slide2

Think about how pattern blocks help to illustrate

the common denominator used to add and .

2

+ = ___Slide3

Can you partition fourths to make sixths?

3

+ = ___Slide4

Can you partition thirds to make eighths?

4

+ = ___Slide5

Can you partition fourths to make twelfths?

5

+ = ___Slide6

6

+ = ___

What is the sum of + ?

7

+ = ___

+ = ___Slide8

What is the relationship between the denominators used to determine the sum?

8

+ =

+ = ___Slide9

Why is one

third

replaced by

four twelfths?

9

+ =

+ = ___

Why is one

fourth

replaced by

three

twelfths?

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By: alexa-scheidler
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