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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 #1 : Adding Within 1000

Solve:

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

Possible Answers:

536

538

539

537

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:

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

Report an Error

Example Question #1 : Adding Within 1000

Solve:

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

Possible Answers:

553

554

555

556

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 #2 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

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

Possible Answers:

897

896

894

895

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 #3 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

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

Possible Answers:

590

592

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 #1 : Adding Within 1000

Solve:

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

Possible Answers:

957

959

958

956

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 #4 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

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

Possible Answers:

814

816

813

815

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 #2 : Adding Within 1000

Solve:

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

Possible Answers:

726

727

725

724

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 #5 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

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

Possible Answers:

592

593

590

591

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 #6 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

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

Possible Answers:

775

776

777

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 #7 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

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

Possible Answers:

835

833

834

832

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

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

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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 #1 : Adding Within 1000

Example Question #1 : Adding Within 1000

Example Question #2 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Example Question #3 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Example Question #1 : Adding Within 1000

Example Question #4 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Example Question #2 : Adding Within 1000

Example Question #5 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Example Question #6 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Example Question #7 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

All Common Core: 3rd Grade Math Resources

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