Common Core: 3rd Grade Math : Measurement & Data

Study concepts, example questions & explanations for Common Core: 3rd Grade Math

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Example Questions

Example Question #251 : How To Find The Area Of A Rectangle

What is the area of the rectangle? 

1x5 

 

Possible Answers:

\(\displaystyle 4in^2\)

\(\displaystyle 6in^2\)

\(\displaystyle 2in^2\)

\(\displaystyle 3in^2\)

\(\displaystyle 5in^2\)

Correct answer:

\(\displaystyle 5in^2\)

Explanation:

We can find the area by counting the squares within the rectangle. There are \(\displaystyle 5\) squares. 

We can also multiply the length and the width to find the area. 

\(\displaystyle 1\times5=5in^2\)

*Area is the number of square units inside a shape, which is why area is always written with square units. 

Example Question #251 : How To Find The Area Of A Rectangle

What is the area of the rectangle? 

 1x1

 

Possible Answers:

\(\displaystyle 4in^2\)

\(\displaystyle 2in^2\)

\(\displaystyle 3in^2\)

\(\displaystyle 5in^2\)

\(\displaystyle 1in^2\)

Correct answer:

\(\displaystyle 1in^2\)

Explanation:

We can find the area by counting the squares within the rectangle. There are \(\displaystyle 1\) squares. 

We can also multiply the length and the width to find the area. 

\(\displaystyle 1\times1=1in^2\)

*Area is the number of square units inside a shape, which is why area is always written with square units. 

Example Question #91 : Geometric Measurement: Understanding Concepts Of Area And Relating Area To Multiplication And To Addition

What is the area of the rectangle? 

2x3 

 

Possible Answers:

\(\displaystyle 7in^2\)

\(\displaystyle 5in^2\)

\(\displaystyle 8in^2\)

\(\displaystyle 6in^2\)

\(\displaystyle 4in^2\)

Correct answer:

\(\displaystyle 6in^2\)

Explanation:

We can find the area by counting the squares within the rectangle. There are \(\displaystyle 6\) squares. 

We can also multiply the length and the width to find the area. 

\(\displaystyle 2\times3=6in^2\)

*Area is the number of square units inside a shape, which is why area is always written with square units. 

Example Question #259 : How To Find The Area Of A Rectangle

What is the area of the rectangle? 

2x9 

 

Possible Answers:

\(\displaystyle 16in^2\)

\(\displaystyle 17in^2\)

\(\displaystyle 14in^2\)

\(\displaystyle 15in^2\)

\(\displaystyle 18in^2\)

Correct answer:

\(\displaystyle 18in^2\)

Explanation:

We can find the area by counting the squares within the rectangle. There are \(\displaystyle 18\) squares. 

We can also multiply the length and the width to find the area. 

\(\displaystyle 2\times9=18in^2\)

*Area is the number of square units inside a shape, which is why area is always written with square units. 

Example Question #61 : Use Multiplication To Find Area Of A Rectangle: Ccss.Math.Content.3.Md.C.7a

What is the area of the rectangle? 

 11x2

 

Possible Answers:

\(\displaystyle 23in^2\)

\(\displaystyle 25in^2\)

\(\displaystyle 24in^2\)

\(\displaystyle 22in^2\)

\(\displaystyle 26in^2\)

Correct answer:

\(\displaystyle 22in^2\)

Explanation:

We can find the area by counting the squares within the rectangle. There are \(\displaystyle 22\) squares. 

We can also multiply the length and the width to find the area. 

\(\displaystyle 11\times2=22in^2\)

*Area is the number of square units inside a shape, which is why area is always written with square units. 

Example Question #321 : Plane Geometry

What is the area of the rectangle? 

11x8 

 

Possible Answers:

\(\displaystyle 84in^2\)

\(\displaystyle 88in^2\)

\(\displaystyle 85in^2\)

\(\displaystyle 86in^2\)

\(\displaystyle 87in^2\)

Correct answer:

\(\displaystyle 88in^2\)

Explanation:

We can find the area by counting the squares within the rectangle. There are \(\displaystyle 88\) squares. 

We can also multiply the length and the width to find the area. 

\(\displaystyle 11\times8=88in^2\)

*Area is the number of square units inside a shape, which is why area is always written with square units. 

Example Question #63 : Use Multiplication To Find Area Of A Rectangle: Ccss.Math.Content.3.Md.C.7a

What is the area of the rectangle? 

10x7 

 

Possible Answers:

\(\displaystyle 67in^2\)

\(\displaystyle 68in^2\)

\(\displaystyle 69in^2\)

\(\displaystyle 71in^2\)

\(\displaystyle 70in^2\)

Correct answer:

\(\displaystyle 70in^2\)

Explanation:

We can find the area by counting the squares within the rectangle. There are \(\displaystyle 70\) squares. 

We can also multiply the length and the width to find the area. 

\(\displaystyle 10\times7=70in^2\)

*Area is the number of square units inside a shape, which is why area is always written with square units. 

Example Question #321 : Quadrilaterals

What is the area of the rectangle? 

 10x3

 

Possible Answers:

\(\displaystyle 32in^2\)

\(\displaystyle 31in^2\)

\(\displaystyle 30in^2\)

\(\displaystyle 29in^2\)

\(\displaystyle 33in^2\)

Correct answer:

\(\displaystyle 30in^2\)

Explanation:

We can find the area by counting the squares within the rectangle. There are \(\displaystyle 30\) squares. 

We can also multiply the length and the width to find the area. 

\(\displaystyle 10\times3=30in^2\)

*Area is the number of square units inside a shape, which is why area is always written with square units. 

Example Question #65 : Use Multiplication To Find Area Of A Rectangle: Ccss.Math.Content.3.Md.C.7a

What is the area of the rectangle? 

 9x4

 

Possible Answers:

\(\displaystyle 38in^2\)

\(\displaystyle 35in^2\)

\(\displaystyle 37in^2\)

\(\displaystyle 34in^2\)

\(\displaystyle 36in^2\)

Correct answer:

\(\displaystyle 36in^2\)

Explanation:

We can find the area by counting the squares within the rectangle. There are \(\displaystyle 36\) squares. 

We can also multiply the length and the width to find the area. 

\(\displaystyle 9\times4=36in^2\)

*Area is the number of square units inside a shape, which is why area is always written with square units. 

Example Question #321 : Geometry

What is the area of the rectangle? 

 9x6

 

Possible Answers:

\(\displaystyle 53in^2\)

\(\displaystyle 50in^2\)

\(\displaystyle 54in^2\)

\(\displaystyle 51in^2\)

\(\displaystyle 52in^2\)

Correct answer:

\(\displaystyle 54in^2\)

Explanation:

We can find the area by counting the squares within the rectangle. There are \(\displaystyle 54\) squares. 

We can also multiply the length and the width to find the area. 

\(\displaystyle 9\times6=54in^2\)

*Area is the number of square units inside a shape, which is why area is always written with square units. 

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