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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 #743 : How To Add

$\frac{\begin{array}[b]{r}10\\ +\ 8\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

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

$\frac{\begin{array}[b]{r}10\\ +\ 8\end{array}}{ \ \ \space18}$

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Example Question #744 : How To Add

$\frac{\begin{array}[b]{r}8\\ +\ 11\end{array}}{ \ \ \space?}$

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

$\frac{\begin{array}[b]{r}8\\ +\ 11\end{array}}{ \ \ \ \space19}$

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Example Question #745 : How To Add

$\frac{\begin{array}[b]{r}16\\ +\ 2\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

16,17,18

$\frac{\begin{array}[b]{r}16\\ +\ 2\end{array}}{ \ \ \space18}$

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Example Question #1801 : Numbers And Operations

$\frac{\begin{array}[b]{r}14\\ +\ 3\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

14,15,16,17

$\frac{\begin{array}[b]{r}14\\ +\ 3\end{array}}{ \ \ \ \space17}$

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Example Question #1592 : Operations

$\frac{\begin{array}[b]{r}7\\ +\ 5\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

7,8,9,10,11,12

$\frac{\begin{array}[b]{r}7\\ +\ 5\end{array}}{ \ \ \ \space12}$

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Example Question #1811 : Numbers And Operations

$\frac{\begin{array}[b]{r}14\\ +\ 6\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

14,15,16,17,18,19,20

$\frac{\begin{array}[b]{r}14\\ +\ 6\end{array}}{ \ \ \space20}$

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Example Question #1594 : Operations

$\frac{\begin{array}[b]{r}16\\ +\ 3\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

16,17,18,19

$\frac{\begin{array}[b]{r}16\\ +\ 3\end{array}}{ \ \ \space19}$

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Example Question #1595 : Operations

$\frac{\begin{array}[b]{r}2\\ +\ 5\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

2,3,4,5,6,7

$\frac{\begin{array}[b]{r}2\\ +\ 5\end{array}}{ \ \ \ \space7}$

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Example Question #1811 : Numbers And Operations

$\frac{\begin{array}[b]{r}7\\ +\ 11\end{array}}{ \ \ \space?}$

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

$\frac{\begin{array}[b]{r}7\\ +\ 11\end{array}}{ \ \ \ \space18}$

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Example Question #751 : How To Add

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

Possible Answers:

Correct answer:

Explanation:

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

12,13,14,15,16,17,18,19,20

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

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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 #743 : How To Add

Example Question #744 : How To Add

Example Question #745 : How To Add

Example Question #1801 : Numbers And Operations

Example Question #1592 : Operations

Example Question #1811 : Numbers And Operations

Example Question #1594 : Operations

Example Question #1595 : Operations

Example Question #1811 : Numbers And Operations

Example Question #751 : How To Add

All Common Core: 2nd Grade Math Resources

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