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Common Core: 2nd Grade Math : Mentally Add and Subtract Within 20: CCSS.Math.Content.2.OA.B.2

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 #131 : How To Subtract

$\frac{\begin{array}[b]{r}6\\ -\ 3\end{array}}{ \ \ \ \space ?}$

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at and count back .

6, 5,4, 3

$\frac{\begin{array}[b]{r}6\\ -\ 3\end{array}}{ \ \ \ \space 3}$

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Example Question #1702 : Common Core Math: Grade 2

$\frac{\begin{array}[b]{r}5\\ -\ 4\end{array}}{ \ \ \ \space ?}$

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at and count back .

5, 4, 3, 2, 1

$\frac{\begin{array}[b]{r}5\\ -\ 4\end{array}}{ \ \ \ \space 1}$

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Example Question #133 : How To Subtract

$\frac{\begin{array}[b]{r}4\\ -\ 2\end{array}}{ \ \ \ \space ?}$

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at and count back .

4, 3, 2

$\frac{\begin{array}[b]{r}4\\ -\ 2\end{array}}{ \ \ \ \space 2}$

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Example Question #134 : How To Subtract

$\frac{\begin{array}[b]{r}3\\ -\ 3\end{array}}{ \ \ \ \space ?}$

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at and count back .

3,2,1,0

$\frac{\begin{array}[b]{r}3\\ -\ 3\end{array}}{ \ \ \ \space 0}$

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Example Question #135 : How To Subtract

$\frac{\begin{array}[b]{r}20\\ -\ 5\end{array}}{ \ \ \ \space ?}$

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at and count back .

20,19,18,17,16,15

$\frac{\begin{array}[b]{r}20\\ -\ 5\end{array}}{ \ \ \space 15}$

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Example Question #136 : How To Subtract

$\frac{\begin{array}[b]{r}19\\ -\ 3\end{array}}{ \ \ \space ?}$

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at and count back .

19,18,17,16

$\frac{\begin{array}[b]{r}19\\ -\ 3\end{array}}{ \ \ \space 16}$

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Example Question #57 : Operations & Algebraic Thinking

$\frac{\begin{array}[b]{r}18\\ -\ 2\end{array}}{ \ \ \space ?}$

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at and count back .

18, 17, 16

$\frac{\begin{array}[b]{r}18\\ -\ 2\end{array}}{ \ \ \space 16}$

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Example Question #58 : Operations & Algebraic Thinking

$\frac{\begin{array}[b]{r}17\\ -\ 5\end{array}}{ \ \ \space ?}$

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at and count back .

17, 16, 15, 14, 13, 12

$\frac{\begin{array}[b]{r}17\\ -\ 5\end{array}}{ \ \ \space 12}$

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Example Question #51 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}16\\ -\ 8\end{array}}{ \ \ \space ?}$

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at and count back .

16, 15, 14, 13, 12, 11, 10, 9, 8

$\frac{\begin{array}[b]{r}16\\ -\ 8\end{array}}{ \ \ \ \space 8}$

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Example Question #51 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}16\\ -\ 10\end{array}}{ \ \ \space ?}$

Possible Answers:

Correct answer:

Explanation:

To subtract we can count backwards. Start at and count back .

16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6

$\frac{\begin{array}[b]{r}16\\ -\ 10\end{array}}{ \ \ \ \ \ \space 6}$

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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 Within 20: CCSS.Math.Content.2.OA.B.2

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

All Common Core: 2nd Grade Math Resources

Example Questions

Example Question #131 : How To Subtract

Example Question #1702 : Common Core Math: Grade 2

Example Question #133 : How To Subtract

Example Question #134 : How To Subtract

Example Question #135 : How To Subtract

Example Question #136 : How To Subtract

Example Question #57 : Operations & Algebraic Thinking

Example Question #58 : Operations & Algebraic Thinking

Example Question #51 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #51 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

All Common Core: 2nd Grade Math Resources

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