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Common Core: 2nd Grade Math : Number & Operations in Base Ten

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 #1121 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}134\\ -\ 10\end{array}}{ \ \ \space ?}$

Possible Answers:

144

234

124

133

224

Correct answer:

124

Explanation:

When subtracting any number by the only number that will change in your answer is the tens place.

4-0=4

3-1=2

1-0=1

$\frac{\begin{array}[b]{r}134\\ -\ 10\end{array}}{ \ \ \space 124}$

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Example Question #84 : How To Subtract

$\frac{\begin{array}[b]{r}629\\ -\ 10\end{array}}{ \ \ \space ?}$

Possible Answers:

529

519

639

628

619

Correct answer:

619

Explanation:

When subtracting any number by the only number that will change in your answer is the tens place.

9-0=9

2-1=1

6-0=6

$\frac{\begin{array}[b]{r}629\\ -\ 10\end{array}}{ \ \ \space 619}$

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Example Question #85 : How To Subtract

$\frac{\begin{array}[b]{r}741\\ -\ 10\end{array}}{ \ \ \space ?}$

Possible Answers:

731

841

730

751

740

Correct answer:

731

Explanation:

When subtracting any number by the only number that will change in your answer is the tens place.

1-0=1

4-1=3

7-0=7

$\frac{\begin{array}[b]{r}741\\ -\ 10\end{array}}{ \ \ \space 731}$

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Example Question #86 : How To Subtract

$\frac{\begin{array}[b]{r}812\\ -\ 10\end{array}}{ \ \ \space ?}$

Possible Answers:

912

822

832

902

802

Correct answer:

802

Explanation:

When subtracting any number by the only number that will change in your answer is the tens place.

2-0=2

1-1=0

8-0=8

$\frac{\begin{array}[b]{r}812\\ -\ 10\end{array}}{ \ \ \space 802}$

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Example Question #311 : How To Subtract

$\frac{\begin{array}[b]{r}432\\ -\ 10\end{array}}{ \ \ \ \space ?}$

Possible Answers:

422

332

412

431

312

Correct answer:

422

Explanation:

When subtracting any number by the only number that will change in your answer is the tens place.

2-0=2

3-1=2

4-0=4

$\frac{\begin{array}[b]{r}432\\ -\ 10\end{array}}{ \ \ \ \space 422}$

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Example Question #1121 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}741\\ +\ 10\end{array}}{?}$

Possible Answers:

761

641

841

742

751

Correct answer:

751

Explanation:

When adding any number by the only number that will change in your answer is the tens place.

1+0=1

4+1=5

7+0=7

$\frac{\begin{array}[b]{r}741\\ +\ 10\end{array}}{\ \ \space751}$

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Example Question #43 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

$\frac{\begin{array}[b]{r}587\\ -\ 100\end{array}}{ \ \ \ \space ?}$

Possible Answers:

577

586

687

487

Correct answer:

487

Explanation:

When subtracting any number by 100 the only number that will change in your answer is the hundreds place.

7-0=7

8-0=8

5-1=4

$\frac{\begin{array}[b]{r}587\\ -\ 100\end{array}}{ \ \ \ \space 487}$

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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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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 : Number & Operations in Base Ten

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

All Common Core: 2nd Grade Math Resources

Example Questions

Example Question #1121 : Number & Operations In Base Ten

Example Question #84 : How To Subtract

Example Question #85 : How To Subtract

Example Question #86 : How To Subtract

Example Question #311 : How To Subtract

Example Question #1121 : Number & Operations In Base Ten

Example Question #43 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Example Question #1 : Add Within 1000

Example Question #2 : Add Within 1000

Example Question #3 : Add Within 1000

All Common Core: 2nd Grade Math Resources

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