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Common Core: 4th Grade Math : Common Core Math: Grade 4

Study concepts, example questions & explanations for Common Core: 4th Grade Math

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All Common Core: 4th Grade Math Resources

7 Diagnostic Tests 189 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #202 : Geometry

What is the length of a rectangular room with an area of 55ft^2 and a width of 11ft?

Possible Answers:

7ft

5ft

6ft

9ft

8ft

Correct answer:

5ft

Explanation:

$A=l\times w$

We have the area and the width, so we can plug those values into our equation and solve for our unknown.

$55=l\times 11$

$\frac{55}{11}=\frac{l\times 11}{11}$

5=l

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Example Question #151 : Plane Geometry

What is the length of a rectangular room with an area of 70ft^2 and a width of 7ft?

Possible Answers:

10ft

9ft

13ft

11ft

12ft

Correct answer:

10ft

Explanation:

$A=l\times w$

We have the area and the width, so we can plug those values into our equation and solve for our unknown.

$70=l\times 7$

$\frac{70}{7}=\frac{l\times 7}{7}$

10=l

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Example Question #141 : Rectangles

What is the length of a rectangular room with an area of 48ft^2 and a width of 6ft?

Possible Answers:

10ft

9ft

6ft

7ft

8ft

Correct answer:

8ft

Explanation:

$A=l\times w$

We have the area and the width, so we can plug those values into our equation and solve for our unknown.

$48=l\times 6$

$\frac{48}{6}=\frac{l\times 6}{6}$

8=l

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Example Question #142 : Rectangles

What is the length of a rectangular room with an area of 45ft^2 and a width of 5ft?

Possible Answers:

8ft

10ft

6ft

7ft

9ft

Correct answer:

9ft

Explanation:

$A=l\times w$

We have the area and the width, so we can plug those values into our equation and solve for our unknown.

$45=l\times 5$

$\frac{45}{5}=\frac{l\times 5}{5}$

9=l

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Example Question #141 : Rectangles

What is the length of a rectangular room with an area of 81ft^2 and a width of 9ft?

Possible Answers:

5ft

8ft

9ft

6ft

7ft

Correct answer:

9ft

Explanation:

$A=l\times w$

We have the area and the width, so we can plug those values into our equation and solve for our unknown.

$81=l\times 9$

$\frac{81}{9}=\frac{l\times 9}{9}$

9=l

Report an Error

Example Question #203 : Geometry

What is the length of a rectangular room with an area of 72ft^2 and a width of 9ft?

Possible Answers:

12ft

10ft

11ft

8ft

9ft

Correct answer:

8ft

Explanation:

$A=l\times w$

We have the area and the width, so we can plug those values into our equation and solve for our unknown.

$72=l\times 9$

$\frac{72}{9}=\frac{l\times 9}{9}$

8=l

Report an Error

Example Question #141 : Rectangles

What is the length of a rectangular room with an area of 90ft^2 and a width of 9ft?

Possible Answers:

13ft

11ft

12ft

10ft

9ft

Correct answer:

10ft

Explanation:

$A=l\times w$

We have the area and the width, so we can plug those values into our equation and solve for our unknown.

$90=l\times 9$

$\frac{90}{9}=\frac{l\times 9}{9}$

10=l

Report an Error

Example Question #209 : Geometry

What is the length of a rectangular room with an area of 40ft^2 and a width of 8ft?

Possible Answers:

6ft

5ft

7ft

3ft

4ft

Correct answer:

5ft

Explanation:

$A=l\times w$

We have the area and the width, so we can plug those values into our equation and solve for our unknown.

$40=l\times 8$

$\frac{40}{8}=\frac{l\times 8}{8}$

5=l

Report an Error

Example Question #174 : Geometry

What is the length of a rectangular room with an area of 110ft^2 and a width of 11ft?

Possible Answers:

11ft

9ft

7ft

10ft

8ft

Correct answer:

10ft

Explanation:

$A=l\times w$

We have the area and the width, so we can plug those values into our equation and solve for our unknown.

$110=l\times 11$

$\frac{110}{11}=\frac{l\times 11}{11}$

10=l

Report an Error

Example Question #171 : Geometry

What is the length of a rectangular room with an area of 100ft^2 and a width of 25ft?

Possible Answers:

7ft

4ft

8ft

5ft

6ft

Correct answer:

4ft

Explanation:

$A=l\times w$

We have the area and the width, so we can plug those values into our equation and solve for our unknown.

$100=l\times 25$

$\frac{100}{25}=\frac{l\times 25}{25}$

4=l

Report an Error

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All Common Core: 4th Grade Math Resources

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Common Core: 4th Grade Math : Common Core Math: Grade 4

Study concepts, example questions & explanations for Common Core: 4th Grade Math

All Common Core: 4th Grade Math Resources

Example Questions

Example Question #202 : Geometry

Example Question #151 : Plane Geometry

Example Question #141 : Rectangles

Example Question #142 : Rectangles

Example Question #141 : Rectangles

Example Question #203 : Geometry

Example Question #141 : Rectangles

Example Question #209 : Geometry

Example Question #174 : Geometry

Example Question #171 : Geometry

All Common Core: 4th Grade Math Resources

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