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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 #2051 : Common Core Math: Grade 2

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

Possible Answers:

Correct answer:

Explanation:

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

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

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

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Example Question #2052 : Common Core Math: Grade 2

$\frac{\begin{array}[b]{r}4\\ +\ 15\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

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

$\frac{\begin{array}[b]{r}4\\ +\ 15\end{array}}{ \ \ \ \space19}$

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Example Question #2053 : Common Core Math: Grade 2

$\frac{\begin{array}[b]{r}16\\ +\ 1\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

16,17

$\frac{\begin{array}[b]{r}16\\ +\ 1\end{array}}{ \ \ \space17}$

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Example Question #2054 : Common Core Math: Grade 2

$\frac{\begin{array}[b]{r}14\\ +\ 2\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

14,15,16

$\frac{\begin{array}[b]{r}14\\ +\ 2\end{array}}{ \ \ \space16}$

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Example Question #2061 : Common Core Math: Grade 2

$\frac{\begin{array}[b]{r}4\\ +\ 3\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

4,5,6,7

$\frac{\begin{array}[b]{r}4\\ +\ 3\end{array}}{ \ \ \ \space7}$

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Example Question #401 : Operations & Algebraic Thinking

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

Possible Answers:

Correct answer:

Explanation:

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

4,5,6,7,8

$\frac{\begin{array}[b]{r}4\\ +\ 4\end{array}}{ \ \ \ \space8}$

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Example Question #402 : Operations & Algebraic Thinking

$\frac{\begin{array}[b]{r}16\\ +\ 4\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

16,17,18,19,20

$\frac{\begin{array}[b]{r}16\\ +\ 4\end{array}}{ \ \ \space20}$

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Example Question #401 : Operations & Algebraic Thinking

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

Possible Answers:

Correct answer:

Explanation:

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

6,7,8,9,10,11

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

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Example Question #741 : How To Add

$\frac{\begin{array}[b]{r}9\\ +\ 5\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

9,10,11,12,13,14

$\frac{\begin{array}[b]{r}9\\ +\ 5\end{array}}{ \ \ \space14}$

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Example Question #742 : How To Add

$\frac{\begin{array}[b]{r}13\\ +\ 6\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

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

$\frac{\begin{array}[b]{r}13\\ +\ 6\end{array}}{ \ \ \space19}$

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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 #2051 : Common Core Math: Grade 2

Example Question #2052 : Common Core Math: Grade 2

Example Question #2053 : Common Core Math: Grade 2

Example Question #2054 : Common Core Math: Grade 2

Example Question #2061 : Common Core Math: Grade 2

Example Question #401 : Operations & Algebraic Thinking

Example Question #402 : Operations & Algebraic Thinking

Example Question #401 : Operations & Algebraic Thinking

Example Question #741 : How To Add

Example Question #742 : How To Add

All Common Core: 2nd Grade Math Resources

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