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Common Core: 2nd Grade Math : Common Core Math: Grade 2

Study concepts, example questions & explanations for Common Core: 2nd Grade Math

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All Common Core: 2nd Grade Math Resources

7 Diagnostic Tests 217 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #462 : Operations & Algebraic Thinking

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 3.12.58 pm

Possible Answers:

4+4+4+4=16

4+4+4+4+4=16

10+6=16

6+10=16

8+8=16

Correct answer:

4+4+4+4=16

Explanation:

When we count the number of squares within the box we get . We have rows with squares in each row. Our math equation for this picture could be written as 4+4+4+4=16.

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Example Question #463 : Operations & Algebraic Thinking

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 1.21.36 pm

Possible Answers:

5+5+5+5+5=25

10+10+5=25

10+10=20

15+10=25

5+5+5+5=20

Correct answer:

5+5+5+5+5=25

Explanation:

When you count the number of squares in this picture you get . We have rows with squares in each row. Our math equation for this picture could be written as 5+5+5+5+5=25.

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Example Question #11 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 1.09.58 pm

Possible Answers:

4+4=8

3+3=6

3+3+3=9

4+5=9

5+4=9

Correct answer:

3+3+3=9

Explanation:

When we count the number of squares in this picture we get . We have rows with squares in each row. Our math equation for this picture could be written as 3+3+3=9.

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Example Question #2452 : Operations

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 2.59.43 pm

Possible Answers:

2+2+2+2+2=10

2+2+2+2=8

5+5+5+5+5=10

2+2+2+2+2+2=12

5+5+5=15

Correct answer:

2+2+2+2+2=10

Explanation:

When we count the number of squares in this picture we get . We have rows with squares in each row. Our math equation for this picture could be written as 2+2+2+2+2=10.

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Example Question #1 : Add Within 1000

Solve:

$\frac{\begin{array}[b]{r}235\\ +\ 204\end{array}}{\space }$

Possible Answers:

438

439

437

436

Correct answer:

439

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left to the tens place, followed by the hundreds place.

Add the numbers in the ones place:

5+4=9

Add the numbers in the tens place:

3+0=3

Add the numbers in the hundreds place:

2+2=4

Your final answer should be 439:

$\frac{\begin{array}[b]{r}235\\ +\ 204\end{array}}{\ \ \ \ 439 }$

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Example Question #2 : Add Within 1000

Solve:

$\frac{\begin{array}[b]{r}330\\ +\ 126\end{array}}{\space }$

Possible Answers:

457

456

458

459

Correct answer:

456

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left to the tens place, followed by the hundreds place.

Add the numbers in the ones place:

0+6=6

Add the numbers in the tens place:

3+2=5

Add the numbers in the hundreds place:

3+1=4

Your final answer should be 456:

$\frac{\begin{array}[b]{r}330\\ +\ 126\end{array}}{\ \ \ 456 }$

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Example Question #3 : Add Within 1000

Solve:

$\frac{\begin{array}[b]{r}387\\ +\ 410\end{array}}{\space }$

Possible Answers:

796

795

798

797

Correct answer:

797

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left to the tens place, followed by the hundreds place.

Add the numbers in the ones place:

7+0=7

Add the numbers in the tens place:

8+1=9

Add the numbers in the hundreds place:

3+4=7

Your final answer should be 797:

$\frac{\begin{array}[b]{r}387\\ +\ 410\end{array}}{\ \ \ 797}$

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Example Question #4 : Add Within 1000

Solve:

$\frac{\begin{array}[b]{r}228\\ +\ 628\end{array}}{\space }$

Possible Answers:

857

856

855

858

Correct answer:

856

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left to the tens place, followed by the hundreds place.

Add the numbers in the ones place:

8+8=16

Because this sum is greater than , we write the from the ones place and carry the from he tens place over to the left. Your work should look something like this:

$\frac{\begin{array}[b]{r}2^{{\color{Red} 1}}2\ 8\\ +\ 6\ 2\ 8\end{array}}{\ \ \ \ \ \ \ \ 6 }$

Add the numbers in the tens place, including the that was carried over:

1+2+2=5

Add the numbers in the hundreds place:

2+6=8

Your final answer should be 856:

$\frac{\begin{array}[b]{r}228\\ +\ 628\end{array}}{\ \ \ 856 }$

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Example Question #5 : Add Within 1000

Solve:

$\frac{\begin{array}[b]{r}195\\ +\ 519\end{array}}{\space }$

Possible Answers:

713

711

714

712

Correct answer:

714

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left to the tens place, followed by the hundreds place.

Add the numbers in the ones place:

5+9=14

Because this sum is greater than , we write the from the ones place and carry the from he tens place over to the left. Your work should look something like this:

$\frac{\begin{array}[b]{r}1^{{\color{Red} 1}}9\ 5\\ +\ 5\ 1\ 9\end{array}}{\ \ \ \ \ \ \ \ 4 }$

Add the numbers in the tens place, including the that was carried over:

1+9+1=11

Because this sum is greater than , we write the from the ones place and carry the from the tens place over to the left. Your work should look something like this:

$\frac{\begin{array}[b]{r}^{{\color{Red} 1}}1^{{\color{Red} 1}}9\ 5\\ +\ 5\ 1\ 9\end{array}}{\ \ \ \ \ \ 1\ 4 }$

Add the numbers in the hundreds place, including the that was carried over:

1+1+5=7

Your final answer should be 714:

$\frac{\begin{array}[b]{r}195\\ +\ 519\end{array}}{\ \ \ 714}$

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Example Question #6 : Add Within 1000

Solve:

$\frac{\begin{array}[b]{r}312\\ +\ 496\end{array}}{\space }$

Possible Answers:

807

808

810

809

Correct answer:

808

Explanation:

When we add with multi-digit numbers, we start with the numbers in the ones place, and then move to the left to the tens place, followed by the hundreds place.

Add the numbers in the ones place:

2+6=8

Add the numbers in the tens place:

1+9=10

Because this sum is greater than , we write the from the ones place and carry the from the tens place over to the left. Your work should look something like this:

$\frac{\begin{array}[b]{r}^{{\color{Red} 1}}312\\ +\ 496\end{array}}{\ \ \ \ \ 08 }$

Add the numbers in the hundreds place, including the that was carried over:

1+3+4=8

Your final answer should be 808:

$\frac{\begin{array}[b]{r}^{1}312\\ +\ 496\end{array}}{\ \ \ \ 808 }$

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All Common Core: 2nd Grade Math Resources

7 Diagnostic Tests 217 Practice Tests Question of the Day Flashcards Learn by Concept

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Common Core: 2nd Grade Math : Common Core Math: Grade 2

Study concepts, example questions & explanations for Common Core: 2nd Grade Math

All Common Core: 2nd Grade Math Resources

Example Questions

Example Question #462 : Operations & Algebraic Thinking

Example Question #463 : Operations & Algebraic Thinking

Example Question #11 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

Example Question #2452 : Operations

Example Question #1 : Add Within 1000

Example Question #2 : Add Within 1000

Example Question #3 : Add Within 1000

Example Question #4 : Add Within 1000

Example Question #5 : Add Within 1000

Example Question #6 : Add Within 1000

All Common Core: 2nd Grade Math Resources

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