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

$\frac{\begin{array}[b]{r}386\\ -\ 100\end{array}}{ \ \ \ \space ?}$

Possible Answers:

486

476

286

276

376

Correct answer:

286

Explanation:

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

6-0=6

8-0=8

3-1=2

$\frac{\begin{array}[b]{r}386\\ -\ 100\end{array}}{ \ \ \ \space 286}$

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Example Question #74 : How To Subtract

$\frac{\begin{array}[b]{r}428\\ -\ 100\end{array}}{ \ \ \ \space ?}$

Possible Answers:

318

528

328

518

418

Correct answer:

328

Explanation:

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

8-0=8

2-0=2

4-1=3

$\frac{\begin{array}[b]{r}428\\ -\ 100\end{array}}{ \ \ \ \space 328}$

Report an Error

Example Question #61 : How To Subtract

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

Possible Answers:

687

487

477

586

577

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 #293 : Ssat Elementary Level Quantitative (Math)

$\frac{\begin{array}[b]{r}572\\ -\ 10\end{array}}{ \ \ \ \space ?}$

Possible Answers:

562

472

571

582

482

Correct answer:

562

Explanation:

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

2-0=2

7-1=6

5-0=5

$\frac{\begin{array}[b]{r}572\\ -\ 10\end{array}}{ \ \ \ \space 562}$

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Example Question #34 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

$\frac{\begin{array}[b]{r}633\\ -\ 10\end{array}}{ \ \ \ \space ?}$

Possible Answers:

533

523

623

643

632

Correct answer:

623

Explanation:

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

3-0=3

3-1=2

6-0=6

$\frac{\begin{array}[b]{r}633\\ -\ 10\end{array}}{ \ \ \ \space 623}$

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Example Question #74 : How To Subtract

$\frac{\begin{array}[b]{r}728\\ -\ 10\end{array}}{ \ \ \ \space ?}$

Possible Answers:

718

727

618

738

628

Correct answer:

718

Explanation:

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

8-0=8

2-1=1

7-0=7

$\frac{\begin{array}[b]{r}728\\ -\ 10\end{array}}{ \ \ \space 718}$

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Example Question #78 : How To Subtract

$\frac{\begin{array}[b]{r}888\\ -\ 10\end{array}}{ \ \ \space ?}$

Possible Answers:

788

898

868

887

878

Correct answer:

878

Explanation:

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

8-0=8

8-1=7

8-0=8

$\frac{\begin{array}[b]{r}888\\ -\ 10\end{array}}{ \ \ \space 878}$

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Example Question #75 : Operations

$\frac{\begin{array}[b]{r}932\\ -\ 10\end{array}}{ \ \ \space ?}$

Possible Answers:

922

832

931

822

933

Correct answer:

922

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

9-0=9

$\frac{\begin{array}[b]{r}932\\ -\ 10\end{array}}{ \ \ \space 922}$

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Example Question #294 : Numbers And Operations

$\frac{\begin{array}[b]{r}321\\ -\ 10\end{array}}{ \ \ \space ?}$

Possible Answers:

331

421

322

311

221

Correct answer:

311

Explanation:

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

1-0=1

2-1=1

3-0=3

$\frac{\begin{array}[b]{r}321\\ -\ 10\end{array}}{ \ \ \space 311}$

Report an Error

Example Question #81 : Operations

$\frac{\begin{array}[b]{r}286\\ -\ 10\end{array}}{ \ \ \space ?}$

Possible Answers:

276

296

285

386

275

Correct answer:

276

Explanation:

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

6-0=6

8-1=7

2-0=2

$\frac{\begin{array}[b]{r}286\\ -\ 10\end{array}}{ \ \ \space 276}$

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

Example Question #74 : How To Subtract

Example Question #61 : How To Subtract

Example Question #293 : Ssat Elementary Level Quantitative (Math)

Example Question #34 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Example Question #74 : How To Subtract

Example Question #78 : How To Subtract

Example Question #75 : Operations

Example Question #294 : Numbers And Operations

Example Question #81 : Operations

All Common Core: 2nd Grade Math Resources

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