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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 #391 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}12\\ +\ 2\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up .

12,13,14

$\frac{\begin{array}[b]{r}12\\ +\ 2\end{array}}{ \ \ \space14}$

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Example Question #392 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}1\\ +\ 3\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up .

1,2,3,4

$\frac{\begin{array}[b]{r}1\\ +\ 3\end{array}}{ \ \ \ \space4}$

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Example Question #393 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}13\\ +\ 4\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up .

13,14,15,16,17

$\frac{\begin{array}[b]{r}13\\ +\ 4\end{array}}{ \ \ \space17}$

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Example Question #394 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}10\\ +\ 5\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up .

10,11,12,13,14,15

$\frac{\begin{array}[b]{r}10\\ +\ 5\end{array}}{ \ \ \space15}$

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Example Question #395 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}11\\ +\ 4\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up .

11,12,13,14,15

$\frac{\begin{array}[b]{r}11\\ +\ 4\end{array}}{ \ \ \space15}$

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Example Question #396 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

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

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up .

4,5,6,7,8,9

$\frac{\begin{array}[b]{r}4\\ +\ 5\end{array}}{ \ \ \ \space9}$

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Example Question #397 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}10\\ +\ 6\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up .

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

$\frac{\begin{array}[b]{r}10\\ +\ 6\end{array}}{ \ \ \space16}$

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Example Question #398 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}2\\ +\ 8\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up .

2,3,4,5,6,7,8,9,10

$\frac{\begin{array}[b]{r}2\\ +\ 8\end{array}}{ \ \ \space10}$

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Example Question #399 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}2\\ +\ 11\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up .

2,3,4,5,6,7,8,9,10,11,12,13

$\frac{\begin{array}[b]{r}2\\ +\ 11\end{array}}{ \ \ \space13}$

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Example Question #400 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}8\\ +\ 12\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up .

8,9,10,11,12,13,14,15,16,17,18,19,20

$\frac{\begin{array}[b]{r}8\\ +\ 12\end{array}}{ \ \ \ \space20}$

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All Common Core: 2nd Grade Math Resources

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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 #391 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #392 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #393 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #394 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #395 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #396 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #397 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #398 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #399 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #400 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

All Common Core: 2nd Grade Math Resources

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