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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 #381 : Adding And Subtracting Within 20

$\frac{\begin{array}[b]{r}10\\ +\ 8\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

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

$\frac{\begin{array}[b]{r}10\\ +\ 8\end{array}}{ \ \ \space18}$

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Example Question #382 : Adding And Subtracting Within 20

$\frac{\begin{array}[b]{r}8\\ +\ 11\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

8,9,10,11,12,13,14,15,16,17,18,19

$\frac{\begin{array}[b]{r}8\\ +\ 11\end{array}}{ \ \ \ \space19}$

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Example Question #383 : Adding And Subtracting Within 20

$\frac{\begin{array}[b]{r}16\\ +\ 2\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

16,17,18

$\frac{\begin{array}[b]{r}16\\ +\ 2\end{array}}{ \ \ \space18}$

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Example Question #384 : Adding And Subtracting Within 20

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

Possible Answers:

Correct answer:

Explanation:

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

14,15,16,17

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

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Example Question #385 : Adding And Subtracting Within 20

$\frac{\begin{array}[b]{r}7\\ +\ 5\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

7,8,9,10,11,12

$\frac{\begin{array}[b]{r}7\\ +\ 5\end{array}}{ \ \ \ \space12}$

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Example Question #386 : Adding And Subtracting Within 20

$\frac{\begin{array}[b]{r}14\\ +\ 6\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

14,15,16,17,18,19,20

$\frac{\begin{array}[b]{r}14\\ +\ 6\end{array}}{ \ \ \space20}$

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Example Question #387 : Adding And Subtracting Within 20

$\frac{\begin{array}[b]{r}16\\ +\ 3\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

16,17,18,19

$\frac{\begin{array}[b]{r}16\\ +\ 3\end{array}}{ \ \ \space19}$

Report an Error

Example Question #388 : Adding And Subtracting Within 20

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

Possible Answers:

Correct answer:

Explanation:

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

2,3,4,5,6,7

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

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Example Question #389 : Adding And Subtracting Within 20

$\frac{\begin{array}[b]{r}7\\ +\ 11\end{array}}{ \ \ \space?}$

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

$\frac{\begin{array}[b]{r}7\\ +\ 11\end{array}}{ \ \ \ \space18}$

Report an Error

Example Question #390 : Adding And Subtracting Within 20

$\frac{\begin{array}[b]{r}12\\ +\ 8\end{array}}{ \ \ \space?}$

Possible Answers:

Correct answer:

Explanation:

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

12,13,14,15,16,17,18,19,20

$\frac{\begin{array}[b]{r}12\\ +\ 8\end{array}}{ \ \ \space20}$

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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 #381 : Adding And Subtracting Within 20

Example Question #382 : Adding And Subtracting Within 20

Example Question #383 : Adding And Subtracting Within 20

Example Question #384 : Adding And Subtracting Within 20

Example Question #385 : Adding And Subtracting Within 20

Example Question #386 : Adding And Subtracting Within 20

Example Question #387 : Adding And Subtracting Within 20

Example Question #388 : Adding And Subtracting Within 20

Example Question #389 : Adding And Subtracting Within 20

Example Question #390 : Adding And Subtracting Within 20

All Common Core: 1st Grade Math Resources

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