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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 #251 : Operations & Algebraic Thinking

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

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

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

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Example Question #661 : How To Add

$\frac{\begin{array}[b]{r}10\\ +\ 1\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

10,11

$\frac{\begin{array}[b]{r}10\\ +\ 1\end{array}}{ \ \ \space11}$

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Example Question #251 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

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

Possible Answers:

Correct answer:

Explanation:

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

17,18,19

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

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Example Question #1901 : Common Core Math: Grade 2

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

Possible Answers:

Correct answer:

Explanation:

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

6,7,8,9

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

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Example Question #671 : How To Add

$\frac{\begin{array}[b]{r}6\\ +\ 4\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

6,7,8,9,10

$\frac{\begin{array}[b]{r}6\\ +\ 4\end{array}}{ \ \ \space10}$

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Example Question #672 : How To Add

$\frac{\begin{array}[b]{r}14\\ +\ 5\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

14,15,16,17,18,19

$\frac{\begin{array}[b]{r}14\\ +\ 5\end{array}}{ \ \ \space19}$

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Example Question #673 : How To Add

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

Possible Answers:

Correct answer:

Explanation:

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

7,8,9,10,11,12,13,14

$\frac{\begin{array}[b]{r}7\\ +\ 7\end{array}}{ \ \ \space14}$

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Example Question #252 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

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

Possible Answers:

Correct answer:

Explanation:

To add we count up. Start at and count up

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

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

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Example Question #675 : How To Add

$\frac{\begin{array}[b]{r}4\\ +\ 10\end{array}}{ \ \ \space?}$

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

$\frac{\begin{array}[b]{r}4\\ +\ 10\end{array}}{ \ \ \ \space14}$

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Example Question #674 : How To Add

$\frac{\begin{array}[b]{r}3\\ +\ 13\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

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

$\frac{\begin{array}[b]{r}3\\ +\ 13\end{array}}{ \ \ \ \space16}$

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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 #251 : Operations & Algebraic Thinking

Example Question #661 : How To Add

Example Question #251 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #1901 : Common Core Math: Grade 2

Example Question #671 : How To Add

Example Question #672 : How To Add

Example Question #673 : How To Add

Example Question #252 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

Example Question #675 : How To Add

Example Question #674 : How To Add

All Common Core: 2nd Grade Math Resources

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