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Common Core: 2nd Grade Math : Mentally Add and Subtract 10 or 100 to a Given Number : CCSS.Math.Content.2.NBT.B.8

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

$\frac{\begin{array}[b]{r}275\\ -\ 100\end{array}}{ \ \ \ \space ?}$

Possible Answers:

265

175

264

375

165

Correct answer:

175

Explanation:

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

5-0=5

7-0=7

2-1=1

$\frac{\begin{array}[b]{r}275\\ -\ 100\end{array}}{ \ \ \ \space 175}$

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Example Question #32 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

$\frac{\begin{array}[b]{r}562\\ -\ 100\end{array}}{ \ \ \ \space ?}$

Possible Answers:

532

431

522

462

422

Correct answer:

462

Explanation:

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

2-0=2

6-0=6

5-1=4

$\frac{\begin{array}[b]{r}562\\ -\ 100\end{array}}{ \ \ \ \space 462}$

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Example Question #73 : How To Subtract

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

Possible Answers:

376

286

486

276

476

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

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

Possible Answers:

518

328

418

528

318

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

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

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Example Question #65 : How To Subtract

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

Possible Answers:

477

577

586

487

687

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 #74 : How To Subtract

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

Possible Answers:

562

472

482

582

571

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

623

523

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 #76 : How To Subtract

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

Possible Answers:

718

618

738

628

727

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 #1116 : Number & Operations In Base Ten

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

Possible Answers:

868

898

788

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

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

Report an Error

Example Question #77 : How To Subtract

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

Possible Answers:

822

933

931

832

922

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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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 : Mentally Add and Subtract 10 or 100 to a Given Number : CCSS.Math.Content.2.NBT.B.8

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

All Common Core: 2nd Grade Math Resources

Example Questions

Example Question #31 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Example Question #32 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Example Question #73 : How To Subtract

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

Example Question #65 : How To Subtract

Example Question #74 : How To Subtract

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

Example Question #76 : How To Subtract

Example Question #1116 : Number & Operations In Base Ten

Example Question #77 : How To Subtract

All Common Core: 2nd Grade Math Resources

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