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Common Core: 2nd Grade Math : Add within 1000

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

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All Common Core: 2nd Grade Math Resources

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Example Questions

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Example Question #1 : Add Within 1000

Solve:

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

Possible Answers:

438

436

437

439

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 #1 : Add Within 1000

Solve:

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

Possible Answers:

457

458

456

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

797

798

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:

856

855

858

857

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:

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

Report an Error

Example Question #5 : Add Within 1000

Solve:

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

Possible Answers:

712

714

713

711

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:

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

Report an Error

Example Question #6 : Add Within 1000

Solve:

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

Possible Answers:

808

809

807

810

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:

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

Report an Error

Example Question #7 : Add Within 1000

Solve:

$\frac{\begin{array}[b]{r}269\\ +\ 221\end{array}}{\space }$

Possible Answers:

490

493

491

492

Correct answer:

490

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:

9+1=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:

$\frac{\begin{array}[b]{r}2^{{\color{Red} 1}}6\ 9\\ +\ 2\ 2\ 1\end{array}}{\ \ \ \ \ \ \ \ 0 }$

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

1+6+2=9

Add the numbers in the hundreds place:

2+2=4

Your final answer should be 490:

$\frac{\begin{array}[b]{r}269\\ +\ 221\end{array}}{\ \ \ 490 }$

Report an Error

Example Question #8 : Add Within 1000

Solve:

$\frac{\begin{array}[b]{r}400\\ +\ 224\end{array}}{\space }$

Possible Answers:

623

622

621

624

Correct answer:

624

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+4=4

Add the numbers in the tens place:

0+2=2

Add the numbers in the hundreds place:

4+2=6

Your final answer should be 624:

$\frac{\begin{array}[b]{r}400\\ +\ 224\end{array}}{\ \ \ 624 }$

Report an Error

Example Question #9 : Add Within 1000

Solve:

$\frac{\begin{array}[b]{r}128\\ +\ 548\end{array}}{\space }$

Possible Answers:

678

676

675

674

Correct answer:

676

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 the tens place over to the left. Your work should look something like this:

$\frac{\begin{array}[b]{r}1^{{\color{Red} 1}}2\ 8\\ +\ 5\ 4\ 8\end{array}}{\ \ \ \ \ \ \ \ 6 }$

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

1+2+4=7

Add the numbers in the hundreds place:

1+5=6

Your final answer should be 676:

$\frac{\begin{array}[b]{r}128\\ +\ 548\end{array}}{\ \ \ 676}$

Report an Error

Example Question #2 : Add Within 1000

Solve:

$\frac{\begin{array}[b]{r}407\\ +\ 328\end{array}}{\space }$

Possible Answers:

732

734

735

733

Correct answer:

735

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+8=15

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:

$\frac{\begin{array}[b]{r}4^{{\color{Red} 1}}0\ 7\\ +\ 3\ 2\ 8\end{array}}{\ \ \ \ \ \ \ \ 5 }$

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

1+0+2=3

Add the numbers in the hundreds place:

4+3=7

Your final answer should be 735:

$\frac{\begin{array}[b]{r}407\\ +\ 328\end{array}}{\ \ \ 735}$

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Common Core: 2nd Grade Math : Add within 1000

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

All Common Core: 2nd Grade Math Resources

Example Questions

Example Question #1 : Add Within 1000

Example Question #1 : 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

Example Question #7 : Add Within 1000

Example Question #8 : Add Within 1000

Example Question #9 : Add Within 1000

Example Question #2 : Add Within 1000

All Common Core: 2nd Grade Math Resources

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