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Common Core: 1st Grade Math : Operations & Algebraic Thinking

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

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All Common Core: 1st Grade Math Resources

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Example Questions

Example Question #200 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

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

Possible Answers:

$\displaystyle 12$

$\displaystyle 10$

$\displaystyle 8$

$\displaystyle 11$

$\displaystyle 9$

Correct answer:

$\displaystyle 9$

Explanation:

To add we count up. Start at $\displaystyle 6$ and count up $\displaystyle 3$ .

6,7,8,9 $\displaystyle 6,7,8,9$

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

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Example Question #321 : Operations & Algebraic Thinking

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

Possible Answers:

$\displaystyle 9$

$\displaystyle 8$

$\displaystyle 10$

$\displaystyle 11$

$\displaystyle 12$

Correct answer:

$\displaystyle 10$

Explanation:

To add we count up. Start at $\displaystyle 6$ and count up $\displaystyle 4$ .

$\displaystyle 6,7,8,9,10$

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

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Example Question #202 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

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

Possible Answers:

$\displaystyle 18$

$\displaystyle 17$

$\displaystyle 15$

$\displaystyle 16$

$\displaystyle 19$

Correct answer:

$\displaystyle 19$

Explanation:

To add we count up. Start at $\displaystyle 14$ and count up $\displaystyle 5$ .

$\displaystyle 14,15,16,17,18,19$

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

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Example Question #322 : Operations & Algebraic Thinking

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

Possible Answers:

$\displaystyle 16$

$\displaystyle 15$

$\displaystyle 18$

$\displaystyle 14$

$\displaystyle 17$

Correct answer:

$\displaystyle 14$

Explanation:

To add we count up. Start at $\displaystyle 7$ and count up $\displaystyle 7$ .

$\displaystyle 7,8,9,10,11,12,13,14$

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

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Example Question #221 : Adding And Subtracting Within 20

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

Possible Answers:

$\displaystyle 16$

$\displaystyle 15$

$\displaystyle 18$

$\displaystyle 14$

$\displaystyle 17$

Correct answer:

$\displaystyle 17$

Explanation:

To add we count up. Start at and count up

$\displaystyle 9,10,11,12,13,14,15,16,17$

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

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Example Question #324 : Operations & Algebraic Thinking

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

Possible Answers:

$\displaystyle 16$

$\displaystyle 15$

$\displaystyle 17$

$\displaystyle 14$

$\displaystyle 18$

Correct answer:

$\displaystyle 14$

Explanation:

To add we count up. Start at $\displaystyle 4$ and count up $\displaystyle 10$ .

$\displaystyle 4,5,6,7,8,9,10,11,12,13,14$

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

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Example Question #206 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

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

Possible Answers:

$\displaystyle 14$

$\displaystyle 18$

$\displaystyle 17$

$\displaystyle 15$

$\displaystyle 16$

Correct answer:

$\displaystyle 16$

Explanation:

To add we count up. Start at $\displaystyle 3$ and count up $\displaystyle 13$ .

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

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

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Example Question #207 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

$\frac{\begin{array}[b]{r}1\\ +\ 17\end{array}}{ \ \ \space?}$ $\displaystyle \frac{\begin{array}[b]{r}1\\ +\ 17\end{array}}{ \ \ \space?}$

Possible Answers:

$\displaystyle 18$

$\displaystyle 17$

$\displaystyle 15$

$\displaystyle 16$

$\displaystyle 19$

Correct answer:

$\displaystyle 18$

Explanation:

To add we count up. Start at $\displaystyle 1$ and count up $\displaystyle 17$ .

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

$\frac{\begin{array}[b]{r}1\\ +\ 17\end{array}}{ \ \ \ \space18}$ $\displaystyle \frac{\begin{array}[b]{r}1\\ +\ 17\end{array}}{ \ \ \ \space18}$

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Example Question #208 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

$\frac{\begin{array}[b]{r}11\\ +\ 1\end{array}}{ \ \ \space?}$ $\displaystyle \frac{\begin{array}[b]{r}11\\ +\ 1\end{array}}{ \ \ \space?}$

Possible Answers:

$\displaystyle 14$

$\displaystyle 12$

$\displaystyle 15$

$\displaystyle 13$

$\displaystyle 16$

Correct answer:

$\displaystyle 12$

Explanation:

To add we count up. Start at $\displaystyle 11$ and count up $\displaystyle 1$ .

11,12 $\displaystyle 11,12$

$\frac{\begin{array}[b]{r}11\\ +\ 1\end{array}}{ \ \ \space12}$ $\displaystyle \frac{\begin{array}[b]{r}11\\ +\ 1\end{array}}{ \ \ \space12}$

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Example Question #209 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

$\frac{\begin{array}[b]{r}7\\ +\ 1\end{array}}{ \ \ \space?}$ $\displaystyle \frac{\begin{array}[b]{r}7\\ +\ 1\end{array}}{ \ \ \space?}$

Possible Answers:

$\displaystyle 8$

$\displaystyle 4$

$\displaystyle 5$

$\displaystyle 7$

$\displaystyle 6$

Correct answer:

$\displaystyle 8$

Explanation:

To add we count up. Start at $\displaystyle 7$ and count up $\displaystyle 1.$

7,8 $\displaystyle 7,8$

$\frac{\begin{array}[b]{r}7\\ +\ 1\end{array}}{ \ \ \ \space8}$ $\displaystyle \frac{\begin{array}[b]{r}7\\ +\ 1\end{array}}{ \ \ \ \space8}$

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Common Core: 1st Grade Math : Operations & Algebraic Thinking

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

All Common Core: 1st Grade Math Resources

Example Questions

Example Question #200 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

Example Question #321 : Operations & Algebraic Thinking

Example Question #202 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

Example Question #322 : Operations & Algebraic Thinking

Example Question #221 : Adding And Subtracting Within 20

Example Question #324 : Operations & Algebraic Thinking

Example Question #206 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

Example Question #207 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

Example Question #208 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

Example Question #209 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

All Common Core: 1st Grade Math Resources

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