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Common Core: 3rd Grade Math : Common Core Math: Grade 3

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

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All Common Core: 3rd Grade Math Resources

7 Diagnostic Tests 226 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #53 : Solve Real World And Mathematical Problems Involving Area: Ccss.Math.Content.3.Md.C.7b

What is the area of the rectangle?

Screen shot 2015 11 10 at 1.56.06 pm

Possible Answers:

51cm^2 $\displaystyle 51cm^2$

49cm^2 $\displaystyle 49cm^2$

50cm^2 $\displaystyle 50cm^2$

52cm^2 $\displaystyle 52cm^2$

48cm^2 $\displaystyle 48cm^2$

Correct answer:

50cm^2 $\displaystyle 50cm^2$

Explanation:

The formula to find area is $A=l\times w$ $\displaystyle A=l\times w$. We are given the length and the width from the problem, so we can plug those values into our equation and solve.

$10\times5=50cm^2$ $\displaystyle 10\times5=50cm^2$

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

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Example Question #54 : Solve Real World And Mathematical Problems Involving Area: Ccss.Math.Content.3.Md.C.7b

What is the area of the rectangle?

Screen shot 2015 11 10 at 1.55.48 pm

Possible Answers:

29cm^2 $\displaystyle 29cm^2$

27cm^2 $\displaystyle 27cm^2$

28cm^2 $\displaystyle 28cm^2$

26cm^2 $\displaystyle 26cm^2$

30cm^2 $\displaystyle 30cm^2$

Correct answer:

30cm^2 $\displaystyle 30cm^2$

Explanation:

The formula to find area is $A=l\times w$ $\displaystyle A=l\times w$. We are given the length and the width from the problem, so we can plug those values into our equation and solve.

$10\times3=30cm^2$ $\displaystyle 10\times3=30cm^2$

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

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Example Question #401 : Plane Geometry

What is the area of the rectangle?

Screen shot 2015 11 10 at 1.54.08 pm

Possible Answers:

60cm^2 $\displaystyle 60cm^2$

57cm^2 $\displaystyle 57cm^2$

58cm^2 $\displaystyle 58cm^2$

56cm^2 $\displaystyle 56cm^2$

59cm^2 $\displaystyle 59cm^2$

Correct answer:

56cm^2 $\displaystyle 56cm^2$

Explanation:

The formula to find area is $A=l\times w$ $\displaystyle A=l\times w$. We are given the length and the width from the problem, so we can plug those values into our equation and solve.

$7\times8=56cm^2$ $\displaystyle 7\times8=56cm^2$

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

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Example Question #56 : Solve Real World And Mathematical Problems Involving Area: Ccss.Math.Content.3.Md.C.7b

What is the area of the rectangle?

Screen shot 2015 11 10 at 1.53.36 pm

Possible Answers:

8cm^2 $\displaystyle 8cm^2$

6cm^2 $\displaystyle 6cm^2$

7cm^2 $\displaystyle 7cm^2$

10cm^2 $\displaystyle 10cm^2$

9cm^2 $\displaystyle 9cm^2$

Correct answer:

7cm^2 $\displaystyle 7cm^2$

Explanation:

The formula to find area is $A=l\times w$ $\displaystyle A=l\times w$. We are given the length and the width from the problem, so we can plug those values into our equation and solve.

$7\times1=7cm^2$ $\displaystyle 7\times1=7cm^2$

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

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Example Question #581 : Geometry

What is the area of the rectangle?

Screen shot 2015 11 10 at 1.53.11 pm

Possible Answers:

61cm^2 $\displaystyle 61cm^2$

63cm^2 $\displaystyle 63cm^2$

64cm^2 $\displaystyle 64cm^2$

62cm^2 $\displaystyle 62cm^2$

60cm^2 $\displaystyle 60cm^2$

Correct answer:

63cm^2 $\displaystyle 63cm^2$

Explanation:

The formula to find area is $A=l\times w$ $\displaystyle A=l\times w$. We are given the length and the width from the problem, so we can plug those values into our equation and solve.

$9\times7=63cm^2$ $\displaystyle 9\times7=63cm^2$

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

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Example Question #341 : Rectangles

What is the area of the rectangle?

Screen shot 2015 11 10 at 1.52.51 pm

Possible Answers:

18cm^2 $\displaystyle 18cm^2$

19cm^2 $\displaystyle 19cm^2$

17cm&2 $\displaystyle 17cm&2$

16cm^2 $\displaystyle 16cm^2$

20cm^2 $\displaystyle 20cm^2$

Correct answer:

18cm^2 $\displaystyle 18cm^2$

Explanation:

The formula to find area is $A=l\times w$ $\displaystyle A=l\times w$. We are given the length and the width from the problem, so we can plug those values into our equation and solve.

$9\times2=18cm^2$ $\displaystyle 9\times2=18cm^2$

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

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Example Question #401 : Quadrilaterals

What is the area of the rectangle?

Screen shot 2015 11 10 at 1.52.22 pm

Possible Answers:

18cm^2 $\displaystyle 18cm^2$

19cm^2 $\displaystyle 19cm^2$

16cm^2 $\displaystyle 16cm^2$

15cm^2 $\displaystyle 15cm^2$

17cm^2 $\displaystyle 17cm^2$

Correct answer:

15cm^2 $\displaystyle 15cm^2$

Explanation:

The formula to find area is $A=l\times w$ $\displaystyle A=l\times w$. We are given the length and the width from the problem, so we can plug those values into our equation and solve.

$3\times5=15cm^2$ $\displaystyle 3\times5=15cm^2$

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

Report an Error

Example Question #51 : Solve Real World And Mathematical Problems Involving Area: Ccss.Math.Content.3.Md.C.7b

What is the area of the rectangle?

Screen shot 2015 11 10 at 1.52.04 pm

Possible Answers:

20cm^2 $\displaystyle 20cm^2$

24cm^2 $\displaystyle 24cm^2$

22cm^2 $\displaystyle 22cm^2$

21cm^2 $\displaystyle 21cm^2$

23cm^2 $\displaystyle 23cm^2$

Correct answer:

24cm^2 $\displaystyle 24cm^2$

Explanation:

The formula to find area is $A=l\times w$ $\displaystyle A=l\times w$. We are given the length and the width from the problem, so we can plug those values into our equation and solve.

$3\times8=24cm^2$ $\displaystyle 3\times8=24cm^2$

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

Report an Error

Example Question #1731 : Common Core Math: Grade 3

If the formula to find the area of the white side of the rectangle below is $2\times2$ $\displaystyle 2\times2$, what is the formula to find that area of the purple side?

Screen shot 2015 11 04 at 1.21.32 pm

Possible Answers:

$3\times3$ $\displaystyle 3\times3$

$5\times2$ $\displaystyle 5\times2$

$3\times2$ $\displaystyle 3\times2$

$4\times3$ $\displaystyle 4\times3$

$4\times2$ $\displaystyle 4\times2$

Correct answer:

$3\times2$ $\displaystyle 3\times2$

Explanation:

Both the purple side and the white side have the same width, $2\ units$ $\displaystyle 2\ units$. The length of the purple side is $3\ units$ $\displaystyle 3\ units$. Thus the area formula for the purple side of the rectangle is $3\times2$ $\displaystyle 3\times2$.

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Example Question #2 : Use Tiling To Show Area Of Rectangles: Ccss.Math.Content.3.Md.C.7c

If the formula to find the area of the white side of the rectangle below is $2\times3$ $\displaystyle 2\times3$, what is the formula to find that area of the purple side?

Screen shot 2015 11 04 at 1.30.24 pm

Possible Answers:

$2\times3$ $\displaystyle 2\times3$

$5\times2$ $\displaystyle 5\times2$

$3\times3$ $\displaystyle 3\times3$

$5\times3$ $\displaystyle 5\times3$

$3\times2$ $\displaystyle 3\times2$

Correct answer:

$3\times3$ $\displaystyle 3\times3$

Explanation:

Both the purple side and the white side have the same width, $3\ units$ $\displaystyle 3\ units$. The length of the purple side is $3\ units$ $\displaystyle 3\ units$. Thus the area formula for the purple side of the rectangle is $3\times3$ $\displaystyle 3\times3$.

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All Common Core: 3rd Grade Math Resources

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Common Core: 3rd Grade Math : Common Core Math: Grade 3

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

All Common Core: 3rd Grade Math Resources

Example Questions

Example Question #53 : Solve Real World And Mathematical Problems Involving Area: Ccss.Math.Content.3.Md.C.7b

Example Question #54 : Solve Real World And Mathematical Problems Involving Area: Ccss.Math.Content.3.Md.C.7b

Example Question #401 : Plane Geometry

Example Question #56 : Solve Real World And Mathematical Problems Involving Area: Ccss.Math.Content.3.Md.C.7b

Example Question #581 : Geometry

Example Question #341 : Rectangles

Example Question #401 : Quadrilaterals

Example Question #51 : Solve Real World And Mathematical Problems Involving Area: Ccss.Math.Content.3.Md.C.7b

Example Question #1731 : Common Core Math: Grade 3

Example Question #2 : Use Tiling To Show Area Of Rectangles: Ccss.Math.Content.3.Md.C.7c

All Common Core: 3rd Grade Math Resources

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