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Common Core: 1st Grade Math : Adding and Subtracting Within 20

Study concepts, example questions & explanations for Common Core: 1st Grade Math

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All Common Core: 1st Grade Math Resources

7 Diagnostic Tests 180 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #2155 : 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 #2156 : Numbers And 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 #293 : Operations & Algebraic Thinking

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

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 #301 : Operations & Algebraic Thinking

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

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 #181 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

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

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 #181 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

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

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 #182 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

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

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 #183 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

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

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 #184 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

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

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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Example Question #185 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

$\frac{\begin{array}[b]{r}2\\ +\ 15\end{array}}{ \ \ \space?}$

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

$\frac{\begin{array}[b]{r}2\\ +\ 15\end{array}}{ \ \ \space17}$

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All Common Core: 1st Grade Math Resources

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Common Core: 1st Grade Math : Adding and Subtracting Within 20

Study concepts, example questions & explanations for Common Core: 1st Grade Math

All Common Core: 1st Grade Math Resources

Example Questions

Example Question #2155 : Numbers And Operations

Example Question #2156 : Numbers And Operations

Example Question #293 : Operations & Algebraic Thinking

Example Question #301 : Operations & Algebraic Thinking

Example Question #181 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

Example Question #181 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

Example Question #182 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

Example Question #183 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

Example Question #184 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

Example Question #185 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

All Common Core: 1st Grade Math Resources

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