Common Core: 1st Grade Math : Use Rectangles and Circles to Show Halves and Fourths: CCSS.MATH.CONTENT.1.G.A.3

Study concepts, example questions & explanations for Common Core: 1st Grade Math

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Example Questions

Example Question #21 : Use Rectangles And Circles To Show Halves And Fourths: Ccss.Math.Content.1.G.A.3

If I cut a circle in half, how am I changing the size? 

Possible Answers:

Each pieces will be smaller than the circle, they will be half the size. 

Each piece will be different sizes.

Each piece will be bigger than the circle

Each piece will be the same size as the circle.

Correct answer:

Each pieces will be smaller than the circle, they will be half the size. 

Explanation:

When we cut something in half, we get two smaller pieces that equal each other. If we put those pieces back together, we’d get the original size of the circle.

Example Question #22 : Use Rectangles And Circles To Show Halves And Fourths: Ccss.Math.Content.1.G.A.3

If we have two circles of the same size, and we cut one of them in half, and one of them in fourths, which pieces will be smaller?  

Possible Answers:

They will both have pieces of the same size.

They will both have pieces of bigger sizes than the original circle.

The circle that we cut into fourths.

The circle that we cut in half.

Correct answer:

The circle that we cut into fourths.

Explanation:

Cutting an object into four pieces makes the pieces smaller because a fourth is smaller than a half. 

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Example Question #46 : Geometry

What portion of the circle is green? 

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Possible Answers:

A fourth

A third

A quater

A half

Correct answer:

A half

Explanation:


The circle is split into two pieces and one of those pieces is colored green. This means that half of the circle is green. 

Example Question #47 : Geometry

What portion of the circle is green? 


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Possible Answers:

A half

A fifth

A third

A fourth

Correct answer:

A fourth

Explanation:

The circle is split into four pieces and one of those pieces is colored green. This means that a fourth of the circle is green. 

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