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Common Core: 3rd Grade Math : Add and Subtract Within 1000: CCSS.Math.Content.3.NBT.A.2

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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 #1 : Adding Within 1000

Solve:

$\frac{\begin{array}[b]{r}335\\ +\ 204\end{array}}{\space }$

Possible Answers:

538

536

537

539

Correct answer:

539

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:

3+2=5

Your final answer should be 539:

$\frac{\begin{array}[b]{r}335\\ +\ 204\end{array}}{\ \ \ \ 539 }$

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Example Question #2 : Adding Within 1000

Solve:

$\frac{\begin{array}[b]{r}430\\ +\ 126\end{array}}{\space }$

Possible Answers:

556

554

553

555

Correct answer:

556

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:

4+1=5

Your final answer should be 556:

$\frac{\begin{array}[b]{r}430\\ +\ 126\end{array}}{\ \ \ 556 }$

Report an Error

Example Question #3 : Adding Within 1000

Solve:

$\frac{\begin{array}[b]{r}487\\ +\ 410\end{array}}{\space }$

Possible Answers:

896

895

897

894

Correct answer:

897

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:

4+4=8

Your final answer should be 897:

$\frac{\begin{array}[b]{r}487\\ +\ 410\end{array}}{\ \ \ 897}$

Report an Error

Example Question #4 : Adding Within 1000

Solve:

$\frac{\begin{array}[b]{r}369\\ +\ 221\end{array}}{\space }$

Possible Answers:

592

590

591

593

Correct answer:

590

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:

$\frac{\begin{array}[b]{r}3^{{\color{Red} 1}}6\ 9\\ +\ 2\ 2\ 1\end{array}}{\ \ \ \ \ \ \ \ 0 }$

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

1+6+2=9

Add the numbers in the hundreds place:

3+2=5

Your final answer should be 590:

$\frac{\begin{array}[b]{r}369\\ +\ 221\end{array}}{\ \ \ 590 }$

Report an Error

Example Question #5 : Adding Within 1000

Solve:

$\frac{\begin{array}[b]{r}328\\ +\ 628\end{array}}{\space }$

Possible Answers:

956

959

957

958

Correct answer:

956

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:

$\frac{\begin{array}[b]{r}3^{{\color{Red} 1}}2\ 8\\ +\ 6\ 2\ 8\end{array}}{\ \ \ \ \ \ \ \ 6 }$

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

1+2+2=5

Add the numbers in the hundreds place:

3+6=9

Your final answer should be 956:

$\frac{\begin{array}[b]{r}328\\ +\ 628\end{array}}{\ \ \ 956 }$

Report an Error

Example Question #6 : Adding Within 1000

Solve:

$\frac{\begin{array}[b]{r}295\\ +\ 519\end{array}}{\space }$

Possible Answers:

816

813

815

814

Correct answer:

814

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:

$\frac{\begin{array}[b]{r}2^{{\color{Red} 1}}9\ 5\\ +\ 5\ 1\ 9\end{array}}{\ \ \ \ \ \ \ \ 4 }$

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:

$\frac{\begin{array}[b]{r}^{{\color{Red} 1}}2^{{\color{Red} 1}}9\ 5\\ +\ 5\ 1\ 9\end{array}}{\ \ \ \ \ \ 1\ 4 }$

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

1+2+5=8

Your final answer should be 814:

$\frac{\begin{array}[b]{r}295\\ +\ 519\end{array}}{\ \ \ 814}$

Report an Error

Example Question #7 : Adding Within 1000

Solve:

$\frac{\begin{array}[b]{r}500\\ +\ 224\end{array}}{\space }$

Possible Answers:

724

726

725

727

Correct answer:

724

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:

5+2=7

Your final answer should be 724:

$\frac{\begin{array}[b]{r}500\\ +\ 224\end{array}}{\ \ \ 724 }$

Report an Error

Example Question #8 : Adding Within 1000

Solve:

$\frac{\begin{array}[b]{r}269\\ +\ 323\end{array}}{\space }$

Possible Answers:

590

593

591

592

Correct answer:

592

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+3=12

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:

$\frac{\begin{array}[b]{r}2^{{\color{Red} 1}}6\ 9\\ +\ 3\ 2\ 3\end{array}}{\ \ \ \ \ \ \ \ 2 }$

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+3=5

Your final answer should be 592:

$\frac{\begin{array}[b]{r}269\\ +\ 323\end{array}}{\ \ \ 592 }$

Report an Error

Example Question #9 : Adding Within 1000

Solve:

$\frac{\begin{array}[b]{r}228\\ +\ 548\end{array}}{\space }$

Possible Answers:

777

775

776

778

Correct answer:

776

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:

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

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

1+2+4=7

Add the numbers in the hundreds place:

2+5=7

Your final answer should be 776:

$\frac{\begin{array}[b]{r}228\\ +\ 548\end{array}}{\ \ \ 776}$

Report an Error

Example Question #10 : Adding Within 1000

Solve:

$\frac{\begin{array}[b]{r}507\\ +\ 328\end{array}}{\space }$

Possible Answers:

833

832

835

834

Correct answer:

835

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:

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

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

1+0+2=3

Add the numbers in the hundreds place:

5+3=8

Your final answer should be 835:

$\frac{\begin{array}[b]{r}507\\ +\ 328\end{array}}{\ \ \ 835}$

Report an Error

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All Common Core: 3rd Grade Math Resources

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Common Core: 3rd Grade Math : Add and Subtract Within 1000: CCSS.Math.Content.3.NBT.A.2

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

All Common Core: 3rd Grade Math Resources

Example Questions

Example Question #1 : Adding Within 1000

Example Question #2 : Adding Within 1000

Example Question #3 : Adding Within 1000

Example Question #4 : Adding Within 1000

Example Question #5 : Adding Within 1000

Example Question #6 : Adding Within 1000

Example Question #7 : Adding Within 1000

Example Question #8 : Adding Within 1000

Example Question #9 : Adding Within 1000

Example Question #10 : Adding Within 1000

All Common Core: 3rd Grade Math Resources

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