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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 #121 : Understanding Place Value And Properties Of Operations For Multi Digit Arithmetic

$\frac{\begin{array}[b]{r}80\\ \times\ 6\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}80\\ \times\ 6\end{array}}{ \ \ \ \space}$

Possible Answers:

470 $\displaystyle 470$

450 $\displaystyle 450$

460 $\displaystyle 460$

480 $\displaystyle 480$

440 $\displaystyle 440$

Correct answer:

480 $\displaystyle 480$

Explanation:

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

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

$6\times8=48$ $\displaystyle 6\times8=48$

$\frac{\begin{array}[b]{r}80\\ \times\ 6\end{array}}{ \ \space480}$ $\displaystyle \frac{\begin{array}[b]{r}80\\ \times\ 6\end{array}}{ \ \space480}$

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Example Question #122 : Understanding Place Value And Properties Of Operations For Multi Digit Arithmetic

$\frac{\begin{array}[b]{r}10\\ \times\ 7\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}10\\ \times\ 7\end{array}}{ \ \ \ \space}$

Possible Answers:

$\displaystyle 90$

$\displaystyle 60$

$\displaystyle 50$

$\displaystyle 70$

$\displaystyle 80$

Correct answer:

$\displaystyle 70$

Explanation:

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

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

$7\times1=7$ $\displaystyle 7\times1=7$

$\frac{\begin{array}[b]{r}10\\ \times\ 7\end{array}}{ \ \ \space70}$ $\displaystyle \frac{\begin{array}[b]{r}10\\ \times\ 7\end{array}}{ \ \ \space70}$

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Example Question #122 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}30\\ \times\ 8\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}30\\ \times\ 8\end{array}}{ \ \ \ \space}$

Possible Answers:

260 $\displaystyle 260$

250 $\displaystyle 250$

280 $\displaystyle 280$

240 $\displaystyle 240$

270 $\displaystyle 270$

Correct answer:

240 $\displaystyle 240$

Explanation:

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

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

$8\times3=24$ $\displaystyle 8\times3=24$

$\frac{\begin{array}[b]{r}30\\ \times\ 8\end{array}}{ \ \space240}$ $\displaystyle \frac{\begin{array}[b]{r}30\\ \times\ 8\end{array}}{ \ \space240}$

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Example Question #71 : Operations

$\frac{\begin{array}[b]{r}20\\ \times\ 9\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}20\\ \times\ 9\end{array}}{ \ \ \ \space}$

Possible Answers:

160 $\displaystyle 160$

180 $\displaystyle 180$

170 $\displaystyle 170$

190 $\displaystyle 190$

150 $\displaystyle 150$

Correct answer:

180 $\displaystyle 180$

Explanation:

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

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

$9\times2=18$ $\displaystyle 9\times2=18$

$\frac{\begin{array}[b]{r}20\\ \times\ 9\end{array}}{ \ \space180}$ $\displaystyle \frac{\begin{array}[b]{r}20\\ \times\ 9\end{array}}{ \ \space180}$

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Example Question #431 : How To Multiply

$\frac{\begin{array}[b]{r}40\\ \times\ 1\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}40\\ \times\ 1\end{array}}{ \ \ \ \space}$

Possible Answers:

$\displaystyle 20$

$\displaystyle 30$

$\displaystyle 50$

$\displaystyle 60$

$\displaystyle 40$

Correct answer:

$\displaystyle 40$

Explanation:

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

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

$1\times4=4$ $\displaystyle 1\times4=4$

$\frac{\begin{array}[b]{r}40\\ \times\ 1\end{array}}{ \ \ \space40}$ $\displaystyle \frac{\begin{array}[b]{r}40\\ \times\ 1\end{array}}{ \ \ \space40}$

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Example Question #43 : How To Multiply Variables

$\frac{\begin{array}[b]{r}50\\ \times\ 2\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}50\\ \times\ 2\end{array}}{ \ \ \ \space}$

Possible Answers:

$\displaystyle 80$

$\displaystyle 70$

100 $\displaystyle 100$

$\displaystyle 60$

$\displaystyle 90$

Correct answer:

100 $\displaystyle 100$

Explanation:

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

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

$2\times5=10$ $\displaystyle 2\times5=10$

$\frac{\begin{array}[b]{r}50\\ \times\ 2\end{array}}{ \ \space100}$ $\displaystyle \frac{\begin{array}[b]{r}50\\ \times\ 2\end{array}}{ \ \space100}$

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Example Question #73 : Operations

$\frac{\begin{array}[b]{r}60\\ \times\ 3\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}60\\ \times\ 3\end{array}}{ \ \ \ \space}$

Possible Answers:

170 $\displaystyle 170$

150 $\displaystyle 150$

160 $\displaystyle 160$

180 $\displaystyle 180$

190 $\displaystyle 190$

Correct answer:

180 $\displaystyle 180$

Explanation:

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

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

$3\times6=18$ $\displaystyle 3\times6=18$

$\frac{\begin{array}[b]{r}60\\ \times\ 3\end{array}}{ \ \space180}$ $\displaystyle \frac{\begin{array}[b]{r}60\\ \times\ 3\end{array}}{ \ \space180}$

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Example Question #45 : How To Multiply Variables

$\frac{\begin{array}[b]{r}70\\ \times\ 4\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}70\\ \times\ 4\end{array}}{ \ \ \ \space}$

Possible Answers:

310 $\displaystyle 310$

300 $\displaystyle 300$

280 $\displaystyle 280$

290 $\displaystyle 290$

370 $\displaystyle 370$

Correct answer:

280 $\displaystyle 280$

Explanation:

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

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

$4\times7=28$ $\displaystyle 4\times7=28$

$\frac{\begin{array}[b]{r}70\\ \times\ 4\end{array}}{ \ \space280}$ $\displaystyle \frac{\begin{array}[b]{r}70\\ \times\ 4\end{array}}{ \ \space280}$

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Example Question #46 : How To Multiply Variables

$\frac{\begin{array}[b]{r}80\\ \times\ 5\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}80\\ \times\ 5\end{array}}{ \ \ \ \space}$

Possible Answers:

410 $\displaystyle 410$

400 $\displaystyle 400$

430 $\displaystyle 430$

420 $\displaystyle 420$

440 $\displaystyle 440$

Correct answer:

400 $\displaystyle 400$

Explanation:

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

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

$5\times8=40$ $\displaystyle 5\times8=40$

$\frac{\begin{array}[b]{r}80\\ \times\ 5\end{array}}{ \ \space400}$ $\displaystyle \frac{\begin{array}[b]{r}80\\ \times\ 5\end{array}}{ \ \space400}$

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Example Question #47 : How To Multiply Variables

$\frac{\begin{array}[b]{r}90\\ \times\ 6\end{array}}{ \ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}90\\ \times\ 6\end{array}}{ \ \ \ \space}$

Possible Answers:

500 $\displaystyle 500$

540 $\displaystyle 540$

530 $\displaystyle 530$

520 $\displaystyle 520$

510 $\displaystyle 510$

Correct answer:

540 $\displaystyle 540$

Explanation:

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

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

$6\times9=54$ $\displaystyle 6\times9=54$

$\frac{\begin{array}[b]{r}90\\ \times\ 6\end{array}}{ \ \space540}$ $\displaystyle \frac{\begin{array}[b]{r}90\\ \times\ 6\end{array}}{ \ \space540}$

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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 #121 : Understanding Place Value And Properties Of Operations For Multi Digit Arithmetic

Example Question #122 : Understanding Place Value And Properties Of Operations For Multi Digit Arithmetic

Example Question #122 : Number & Operations In Base Ten

Example Question #71 : Operations

Example Question #431 : How To Multiply

Example Question #43 : How To Multiply Variables

Example Question #73 : Operations

Example Question #45 : How To Multiply Variables

Example Question #46 : How To Multiply Variables

Example Question #47 : How To Multiply Variables

All Common Core: 3rd Grade Math Resources

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