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

$\frac{\begin{array}[b]{r}7\\ +\ 3\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

7,8,9,10

$\frac{\begin{array}[b]{r}7\\ +\ 3\end{array}}{ \ \ \space10}$

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Example Question #1532 : Operations

$\frac{\begin{array}[b]{r}8\\ +\ 4\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

8,9,10,11,12

$\frac{\begin{array}[b]{r}8\\ +\ 4\end{array}}{ \ \ \space12}$

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Example Question #363 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}3\\ +\ 5\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

3,4,5,6,7,8

$\frac{\begin{array}[b]{r}3\\ +\ 5\end{array}}{ \ \ \ \space8}$

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Example Question #364 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}5\\ +\ 6\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

5,6,7,8,9,10,11

$\frac{\begin{array}[b]{r}5\\ +\ 6\end{array}}{ \ \ \space11}$

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Example Question #365 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}9\\ +\ 6\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

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

$\frac{\begin{array}[b]{r}9\\ +\ 6\end{array}}{ \ \ \space15}$

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Example Question #366 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}10\\ +\ 7\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

10,11,12,13,14,15,16,17

$\frac{\begin{array}[b]{r}10\\ +\ 7\end{array}}{ \ \ \space17}$

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Example Question #367 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}8\\ +\ 9\end{array}}{ \ \ \space?}$

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

$\frac{\begin{array}[b]{r}8\\ +\ 9\end{array}}{ \ \ \space17}$

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Example Question #368 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}10\\ +\ 9\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

10,11,12,13,14,15,16,17,18,19

$\frac{\begin{array}[b]{r}10\\ +\ 9\end{array}}{ \ \ \space19}$

Report an Error

Example Question #369 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}4\\ +\ 12\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

4,5,6,7,8,9,10,11,12,13,14,15,16

$\frac{\begin{array}[b]{r}4\\ +\ 12\end{array}}{ \ \ \ \space16}$

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Example Question #370 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

$\frac{\begin{array}[b]{r}7\\ +\ 13\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

7,8,9,10,11,12,13,14,15,16,17,18,19,20

$\frac{\begin{array}[b]{r}7\\ +\ 13\end{array}}{ \ \ \ \space20}$

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

Example Question #1532 : Operations

Example Question #363 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #364 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #365 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #366 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #367 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #368 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #369 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #370 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

All Common Core: 2nd Grade Math Resources

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