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

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

Possible Answers:

822

813

912

802

832

Correct answer:

822

Explanation:

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

2+0=2

1+1=2

8+0=8

$\frac{\begin{array}[b]{r}812\\ +\ 10\end{array}}{\ \ \space822}$

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Example Question #1102 : Common Core Math: Grade 2

$\frac{\begin{array}[b]{r}432\\ -\ 100\end{array}}{?}$

Possible Answers:

332

442

542

532

542

Correct answer:

332

Explanation:

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

2-0=2

3-0=3

4-1=3

$\frac{\begin{array}[b]{r}432\\ -\ 100\end{array}}{ \ \ \ \space 332}$

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Example Question #61 : How To Subtract

$\frac{\begin{array}[b]{r}349\\ -\ 100\end{array}}{ \ \ \ \space ?}$

Possible Answers:

649

359

248

249

449

Correct answer:

249

Explanation:

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

9-0=9

4-0=4

3-1=2

$\frac{\begin{array}[b]{r}349\\ -\ 100\end{array}}{ \ \ \ \space 249}$

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Example Question #63 : Operations

$\frac{\begin{array}[b]{r}222\\ -\ 100\end{array}}{ \ \ \ \space ?}$

Possible Answers:

232

122

223

322

422

Correct answer:

122

Explanation:

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

2-0=2

2-1=1

$\frac{\begin{array}[b]{r}222\\ -\ 100\end{array}}{ \ \ \ \space122}$

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Example Question #21 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

$\frac{\begin{array}[b]{r}642\\ -\ 100\end{array}}{ \ \ \ \space ?}$

Possible Answers:

532

542

632

642

442

Correct answer:

542

Explanation:

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

2-0=2

4-0=4

5-1=5

$\frac{\begin{array}[b]{r}642\\ -\ 100\end{array}}{ \ \ \ \space 542}$

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Example Question #63 : Operations

$\frac{\begin{array}[b]{r}789\\ -\ 100\end{array}}{ \ \ \ \space ?}$

Possible Answers:

589

689

679

779

889

Correct answer:

689

Explanation:

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

9-0=9

8-0=8

7-1=6

$\frac{\begin{array}[b]{r}789\\ -\ 100\end{array}}{ \ \ \ \space 689}$

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Example Question #65 : Operations

$\frac{\begin{array}[b]{r}867\\ -\ 100\end{array}}{ \ \ \ \space ?}$

Possible Answers:

857

767

757

967

866

Correct answer:

767

Explanation:

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

7-0=7

6-0=6

8-1=7

$\frac{\begin{array}[b]{r}867\\ -\ 100\end{array}}{ \ \ \ \space 767}$

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Example Question #71 : How To Subtract

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

Possible Answers:

100

200

Correct answer:

Explanation:

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

0-0=0

1-1=0

$\frac{\begin{array}[b]{r}100\\ -\ 100\end{array}}{ \ \ \ \ \ \ \space 0}$

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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:

175

165

264

265

375

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:

462

422

532

431

522

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

Example Question #1102 : Common Core Math: Grade 2

Example Question #61 : How To Subtract

Example Question #63 : Operations

Example Question #21 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

Example Question #63 : Operations

Example Question #65 : Operations

Example Question #71 : How To Subtract

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

All Common Core: 2nd Grade Math Resources

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