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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 #1625 : Numbers And 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 #1626 : Numbers And Operations

$\frac{\begin{array}[b]{r}1\\ +\ 5\end{array}}{ \ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

1,2,3,4,5,6

$\frac{\begin{array}[b]{r}1\\ +\ 5\end{array}}{ \ \ \ \space6}$

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Example Question #1411 : Operations

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

Possible Answers:

Correct answer:

Explanation:

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

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

$\frac{\begin{array}[b]{r}3\\ +\ 6\end{array}}{ \ \ \ \space9}$

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Example Question #561 : How To Add

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

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

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

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Example Question #1413 : Operations

$\frac{\begin{array}[b]{r}9\\ +\ 11\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

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

$\frac{\begin{array}[b]{r}9\\ +\ 11\end{array}}{ \ \ \ \space20}$

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Example Question #231 : Operations & Algebraic Thinking

$\frac{\begin{array}[b]{r}3\\ +\ 8\end{array}}{ \ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

3,4,5,6,7,8,9,10,11

$\frac{\begin{array}[b]{r}3\\ +\ 8\end{array}}{ \ \ \space11}$

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Example Question #1631 : Numbers And Operations

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

Possible Answers:

Correct answer:

Explanation:

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

9,10,11,12,13,14,15,16,17,18

$\frac{\begin{array}[b]{r}9\\ +\ 9\end{array}}{ \ \ \space18}$

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Example Question #232 : Operations & Algebraic Thinking

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

Possible Answers:

Correct answer:

Explanation:

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

2,3,4,5,6

$\frac{\begin{array}[b]{r}2\\ +\ 4\end{array}}{ \ \ \ \space6}$

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Example Question #1623 : Numbers And Operations

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

Possible Answers:

Correct answer:

Explanation:

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

5,6,7

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

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Example Question #233 : Operations & Algebraic Thinking

$\frac{\begin{array}[b]{r}1\\ +\ 13\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

1,2,3,4,5,6,7,8,9,10,11,12,13,14

$\frac{\begin{array}[b]{r}1\\ +\ 13\end{array}}{ \ \ \space14}$

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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 #1625 : Numbers And Operations

Example Question #1626 : Numbers And Operations

Example Question #1411 : Operations

Example Question #561 : How To Add

Example Question #1413 : Operations

Example Question #231 : Operations & Algebraic Thinking

Example Question #1631 : Numbers And Operations

Example Question #232 : Operations & Algebraic Thinking

Example Question #1623 : Numbers And Operations

Example Question #233 : Operations & Algebraic Thinking

All Common Core: 2nd Grade Math Resources

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