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Common Core: 3rd Grade Math : Number & Operations in Base Ten

Study concepts, example questions & explanations for Common Core: 3rd Grade Math

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All Common Core: 3rd Grade Math Resources

7 Diagnostic Tests 226 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #111 : Algebraic Concepts

$\frac{\begin{array}[b]{r}30\\ \times\ 4\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}30\\ \times\ 4\end{array}}{ \ \ \ \space}$

Possible Answers:

120 $\displaystyle 120$

110 $\displaystyle 110$

130 $\displaystyle 130$

100 $\displaystyle 100$

140 $\displaystyle 140$

Correct answer:

120 $\displaystyle 120$

Explanation:

To solve this problem, we multiply $\displaystyle 4$ by the ones position and the tens position.

$4\times0=0$ $\displaystyle 4\times0=0$

$4\times3=12$ $\displaystyle 4\times3=12$

$\frac{\begin{array}[b]{r}30\\ \times\ 4\end{array}}{ \ \space120}$ $\displaystyle \frac{\begin{array}[b]{r}30\\ \times\ 4\end{array}}{ \ \space120}$

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Example Question #172 : Understanding Place Value And Properties Of Operations For Multi Digit Arithmetic

$\frac{\begin{array}[b]{r}40\\ \times\ 5\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}40\\ \times\ 5\end{array}}{ \ \ \ \space}$

Possible Answers:

200 $\displaystyle 200$

210 $\displaystyle 210$

230 $\displaystyle 230$

220 $\displaystyle 220$

240 $\displaystyle 240$

Correct answer:

200 $\displaystyle 200$

Explanation:

To solve this problem, we multiply $\displaystyle 5$ by the ones position and the tens position.

$5\times0=0$ $\displaystyle 5\times0=0$

$5\times4=20$ $\displaystyle 5\times4=20$

$\frac{\begin{array}[b]{r}40\\ \times\ 5\end{array}}{ \ \space200}$ $\displaystyle \frac{\begin{array}[b]{r}40\\ \times\ 5\end{array}}{ \ \space200}$

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Example Question #173 : Understanding Place Value And Properties Of Operations For Multi Digit Arithmetic

$\frac{\begin{array}[b]{r}50\\ \times\ 6\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}50\\ \times\ 6\end{array}}{ \ \ \ \space}$

Possible Answers:

$\displaystyle 20$

$\displaystyle 10$

$\displaystyle 50$

$\displaystyle 30$

$\displaystyle 40$

Correct answer:

$\displaystyle 30$

Explanation:

To solve this problem, we multiply $\displaystyle 6$ by the ones position and the tens position.

$6\times0=0$ $\displaystyle 6\times0=0$

$6\times5=30$ $\displaystyle 6\times5=30$

$\frac{\begin{array}[b]{r}50\\ \times\ 6\end{array}}{ \ \space300}$ $\displaystyle \frac{\begin{array}[b]{r}50\\ \times\ 6\end{array}}{ \ \space300}$

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Example Question #121 : Operations

$\frac{\begin{array}[b]{r}60\\ \times\ 7\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}60\\ \times\ 7\end{array}}{ \ \ \ \space}$

Possible Answers:

420 $\displaystyle 420$

430 $\displaystyle 430$

450 $\displaystyle 450$

410 $\displaystyle 410$

440 $\displaystyle 440$

Correct answer:

420 $\displaystyle 420$

Explanation:

To solve this problem, we multiply $\displaystyle 7$ by the ones position and the tens position.

$7\times0=0$ $\displaystyle 7\times0=0$

$7\times6=42$ $\displaystyle 7\times6=42$

$\frac{\begin{array}[b]{r}60\\ \times\ 7\end{array}}{ \ \space420}$ $\displaystyle \frac{\begin{array}[b]{r}60\\ \times\ 7\end{array}}{ \ \space420}$

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Example Question #122 : Operations

$\frac{\begin{array}[b]{r}70\\ \times\ 8\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}70\\ \times\ 8\end{array}}{ \ \ \ \space}$

Possible Answers:

560 $\displaystyle 560$

530 $\displaystyle 530$

550 $\displaystyle 550$

570 $\displaystyle 570$

540 $\displaystyle 540$

Correct answer:

560 $\displaystyle 560$

Explanation:

To solve this problem, we multiply $\displaystyle 8$ by the ones position and the tens position.

$8\times0=0$ $\displaystyle 8\times0=0$

$8\times7=56$ $\displaystyle 8\times7=56$

$\frac{\begin{array}[b]{r}70\\ \times\ 8\end{array}}{ \ \space560}$ $\displaystyle \frac{\begin{array}[b]{r}70\\ \times\ 8\end{array}}{ \ \space560}$

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Example Question #121 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

$\frac{\begin{array}[b]{r}70\\ \times\ 9\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}70\\ \times\ 9\end{array}}{ \ \ \ \space}$

Possible Answers:

640 $\displaystyle 640$

650 $\displaystyle 650$

670 $\displaystyle 670$

660 $\displaystyle 660$

630 $\displaystyle 630$

Correct answer:

630 $\displaystyle 630$

Explanation:

To solve this problem, we multiply $\displaystyle 9$ by the ones position and the tens position.

$9\times0=0$ $\displaystyle 9\times0=0$

$9\times7=63$ $\displaystyle 9\times7=63$

$\frac{\begin{array}[b]{r}70\\ \times\ 9\end{array}}{ \ \space630}$ $\displaystyle \frac{\begin{array}[b]{r}70\\ \times\ 9\end{array}}{ \ \space630}$

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Example Question #122 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

$\frac{\begin{array}[b]{r}80\\ \times\ 9\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}80\\ \times\ 9\end{array}}{ \ \ \ \space}$

Possible Answers:

710 $\displaystyle 710$

700 $\displaystyle 700$

740 $\displaystyle 740$

720 $\displaystyle 720$

730 $\displaystyle 730$

Correct answer:

720 $\displaystyle 720$

Explanation:

To solve this problem, we multiply $\displaystyle 9$ by the ones position and the tens position.

$9\times0=0$ $\displaystyle 9\times0=0$

$9\times8=72$ $\displaystyle 9\times8=72$

$\frac{\begin{array}[b]{r}80\\ \times\ 9\end{array}}{ \ \space720}$ $\displaystyle \frac{\begin{array}[b]{r}80\\ \times\ 9\end{array}}{ \ \space720}$

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Example Question #125 : Operations

$\frac{\begin{array}[b]{r}10\\ \times\ 1\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}10\\ \times\ 1\end{array}}{ \ \ \ \space}$

Possible Answers:

$\displaystyle 50$

$\displaystyle 40$

$\displaystyle 10$

$\displaystyle 30$

$\displaystyle 20$

Correct answer:

$\displaystyle 10$

Explanation:

To solve this problem, we multiply $\displaystyle 1$ by the ones position and the tens position.

$1\times0=0$ $\displaystyle 1\times0=0$

$1\times1=1$ $\displaystyle 1\times1=1$

$\frac{\begin{array}[b]{r}10\\ \times\ 1\end{array}}{ \ \ \space10}$ $\displaystyle \frac{\begin{array}[b]{r}10\\ \times\ 1\end{array}}{ \ \ \space10}$

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Example Question #123 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

$\frac{\begin{array}[b]{r}40\\ \times\ 2\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}40\\ \times\ 2\end{array}}{ \ \ \ \space}$

Possible Answers:

$\displaystyle 70$

$\displaystyle 80$

$\displaystyle 40$

$\displaystyle 60$

$\displaystyle 50$

Correct answer:

$\displaystyle 80$

Explanation:

To solve this problem, we multiply $\displaystyle 2$ by the ones position and the tens position.

$2\times0=0$ $\displaystyle 2\times0=0$

$2\times4=8$ $\displaystyle 2\times4=8$

$\frac{\begin{array}[b]{r}40\\ \times\ 2\end{array}}{ \ \ \space80}$ $\displaystyle \frac{\begin{array}[b]{r}40\\ \times\ 2\end{array}}{ \ \ \space80}$

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Example Question #551 : How To Multiply

$\frac{\begin{array}[b]{r}30\\ \times\ 3\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}30\\ \times\ 3\end{array}}{ \ \ \ \space}$

Possible Answers:

$\displaystyle 90$

$\displaystyle 40$

$\displaystyle 60$

$\displaystyle 30$

$\displaystyle 50$

Correct answer:

$\displaystyle 90$

Explanation:

To solve this problem, we multiply $\displaystyle 3$ by the ones position and the tens position.

$3\times0=0$ $\displaystyle 3\times0=0$

$3\times3=9$ $\displaystyle 3\times3=9$

$\frac{\begin{array}[b]{r}30\\ \times\ 3\end{array}}{ \ \ \space90}$ $\displaystyle \frac{\begin{array}[b]{r}30\\ \times\ 3\end{array}}{ \ \ \space90}$

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All Common Core: 3rd Grade Math Resources

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Common Core: 3rd Grade Math : Number & Operations in Base Ten

Study concepts, example questions & explanations for Common Core: 3rd Grade Math

All Common Core: 3rd Grade Math Resources

Example Questions

Example Question #111 : Algebraic Concepts

Example Question #172 : Understanding Place Value And Properties Of Operations For Multi Digit Arithmetic

Example Question #173 : Understanding Place Value And Properties Of Operations For Multi Digit Arithmetic

Example Question #121 : Operations

Example Question #122 : Operations

Example Question #121 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

Example Question #122 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

Example Question #125 : Operations

Example Question #123 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

Example Question #551 : How To Multiply

All Common Core: 3rd Grade Math Resources

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