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

Solve:

$\frac{\begin{array}[b]{r}211\\ +\ 221\end{array}}{\space }$

Possible Answers:

431

432

430

433

Correct answer:

432

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:

1+1=2

Add the numbers in the tens place:

1+2=3

Add the numbers in the hundreds place:

2+2=4

Your final answer should be 432:

$\frac{\begin{array}[b]{r}211\\ +\ 221\end{array}}{\ \ \ 432}$

Report an Error

Example Question #12 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

$\frac{\begin{array}[b]{r}435\\ +\ 204\end{array}}{\space }$

Possible Answers:

636

637

639

638

Correct answer:

639

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:

4+2=6

Your final answer should be 639:

$\frac{\begin{array}[b]{r}435\\ +\ 204\end{array}}{\ \ \ 639 }$

Report an Error

Example Question #13 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

$\frac{\begin{array}[b]{r}530\\ +\ 126\end{array}}{\space }$

Possible Answers:

653

654

656

655

Correct answer:

656

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:

5+1=6

Your final answer should be 656:

$\frac{\begin{array}[b]{r}530\\ +\ 126\end{array}}{\ \ \ 656 }$

Report an Error

Example Question #14 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

$\frac{\begin{array}[b]{r}587\\ +\ 410\end{array}}{\space }$

Possible Answers:

998

999

997

996

Correct answer:

997

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:

5+4=9

Your final answer should be 997:

$\frac{\begin{array}[b]{r}587\\ +\ 410\end{array}}{\ \ \ 997}$

Report an Error

Example Question #15 : Adding Within 1000

Solve:

$\frac{\begin{array}[b]{r}512\\ +\ 496\end{array}}{\space }$

Possible Answers:

$1\textup,006$

$1\textup,008$

$1\textup,005$

$1\textup,007$

Correct answer:

$1\textup,008$

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:

$\frac{\begin{array}[b]{r}^{{\color{Red} 1}}512\\ +\ 496\end{array}}{\ \ \ \ \ 08 }$

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

1+5+4=10

Your final answer should be 1008:

$\frac{\begin{array}[b]{r}^{1}512\\ +\ 496\end{array}}{\ \ 1008 }$

Report an Error

Example Question #11 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

$\frac{\begin{array}[b]{r}469\\ +\ 221\end{array}}{\space }$

Possible Answers:

693

692

690

691

Correct answer:

690

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:

$\frac{\begin{array}[b]{r}4^{{\color{Red} 1}}6\ 9\\ +\ 2\ 2\ 1\end{array}}{\ \ \ \ \ \ \ \ 0 }$

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

1+6+2=9

Add the numbers in the hundreds place:

4+2=6

Your final answer should be 690:

$\frac{\begin{array}[b]{r}469\\ +\ 221\end{array}}{\ \ \ 690 }$

Report an Error

Example Question #12 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

$\frac{\begin{array}[b]{r}128\\ +\ 628\end{array}}{\space }$

Possible Answers:

759

757

756

758

Correct answer:

756

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:

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

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

1+2+2=5

Add the numbers in the hundreds place:

1+6=7

Your final answer should be 756:

$\frac{\begin{array}[b]{r}128\\ +\ 628\end{array}}{\ \ \ 756 }$

Report an Error

Example Question #191 : Number & Operations In Base Ten

Solve:

$\frac{\begin{array}[b]{r}395\\ +\ 519\end{array}}{\space }$

Possible Answers:

916

915

914

917

Correct answer:

914

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:

$\frac{\begin{array}[b]{r}3^{{\color{Red} 1}}9\ 5\\ +\ 5\ 1\ 9\end{array}}{\ \ \ \ \ \ \ \ 4 }$

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:

$\frac{\begin{array}[b]{r}^{{\color{Red} 1}}3^{{\color{Red} 1}}9\ 5\\ +\ 5\ 1\ 9\end{array}}{\ \ \ \ \ \ 1\ 4 }$

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

1+3+5=9

Your final answer should be 914:

$\frac{\begin{array}[b]{r}395\\ +\ 519\end{array}}{\ \ \ 914}$

Report an Error

Example Question #15 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

$\frac{\begin{array}[b]{r}600\\ +\ 224\end{array}}{\space }$

Possible Answers:

824

823

822

825

Correct answer:

824

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:

6+2=8

Your final answer should be 824:

$\frac{\begin{array}[b]{r}600\\ +\ 224\end{array}}{\ \ \ 824 }$

Report an Error

Example Question #16 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Solve:

$\frac{\begin{array}[b]{r}369\\ +\ 323\end{array}}{\space }$

Possible Answers:

691

693

694

692

Correct answer:

692

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:

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

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

1+6+2=9

Add the numbers in the hundreds place:

3+3=6

Your final answer should be 692:

$\frac{\begin{array}[b]{r}369\\ +\ 323\end{array}}{\ \ \ 692 }$

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

Example Question #12 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Example Question #13 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Example Question #14 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Example Question #15 : Adding Within 1000

Example Question #11 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Example Question #12 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Example Question #191 : Number & Operations In Base Ten

Example Question #15 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

Example Question #16 : Add And Subtract Within 1000: Ccss.Math.Content.3.Nbt.A.2

All Common Core: 3rd Grade Math Resources

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