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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 #702 : How To Add

$\frac{\begin{array}[b]{r}7\\ +\ 12\end{array}}{ \ \ \space?}$

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

$\frac{\begin{array}[b]{r}7\\ +\ 12\end{array}}{ \ \ \space19}$

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Example Question #703 : How To Add

$\frac{\begin{array}[b]{r}4\\ +\ 14\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

4,5,6,7,8,9,10,11,12,13,14,15,16,17,18

$\frac{\begin{array}[b]{r}4\\ +\ 14\end{array}}{ \ \ \ \space18}$

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Example Question #704 : How To Add

$\frac{\begin{array}[b]{r}1\\ +\ 15\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16

$\frac{\begin{array}[b]{r}1\\ +\ 15\end{array}}{ \ \ \ \space16}$

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Example Question #705 : How To Add

$\frac{\begin{array}[b]{r}2\\ +\ 17\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19

$\frac{\begin{array}[b]{r}2\\ +\ 17\end{array}}{ \ \ \ \space19}$

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Example Question #706 : How To Add

$\frac{\begin{array}[b]{r}1\\ +\ 18\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19

$\frac{\begin{array}[b]{r}1\\ +\ 18\end{array}}{ \ \ \ \space19}$

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Example Question #701 : How To Add

$\frac{\begin{array}[b]{r}9\\ +\ 1\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up

9,10

$\frac{\begin{array}[b]{r}9\\ +\ 1\end{array}}{ \ \ \space10}$

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Example Question #702 : How To Add

$\frac{\begin{array}[b]{r}6\\ +\ 2\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

6,7,8

$\frac{\begin{array}[b]{r}6\\ +\ 2\end{array}}{ \ \ \ \space8}$

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Example Question #703 : How To Add

$\frac{\begin{array}[b]{r}9\\ +\ 3\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

9,10,11,12

$\frac{\begin{array}[b]{r}9\\ +\ 3\end{array}}{ \ \ \space12}$

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Example Question #711 : How To Add

$\frac{\begin{array}[b]{r}7\\ +\ 4\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

7,8,9,10,11

$\frac{\begin{array}[b]{r}7\\ +\ 4\end{array}}{ \ \ \ \space11}$

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Example Question #711 : How To Add

$\frac{\begin{array}[b]{r}7\\ +\ 6\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

7,8,9,10,11,12,13

$\frac{\begin{array}[b]{r}7\\ +\ 6\end{array}}{ \ \ \space13}$

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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 #702 : How To Add

Example Question #703 : How To Add

Example Question #704 : How To Add

Example Question #705 : How To Add

Example Question #706 : How To Add

Example Question #701 : How To Add

Example Question #702 : How To Add

Example Question #703 : How To Add

Example Question #711 : How To Add

Example Question #711 : How To Add

All Common Core: 2nd Grade Math Resources

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