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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 #71 : Operations

$\frac{\begin{array}[b]{r}20\\ \times\ 7\end{array}}{ \ \ \ \space}$

Possible Answers:

140

130

160

170

150

Correct answer:

140

Explanation:

To solve this problem, we multiply by the ones position and the tens position.

$7\times0=0$

$7\times2=14$

$\frac{\begin{array}[b]{r}20\\ \times\ 7\end{array}}{ \ \space140}$

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Example Question #31 : Multiply One Digit Numbers By Multiples Of 10: Ccss.Math.Content.3.Nbt.A.3

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

Possible Answers:

Correct answer:

Explanation:

To solve this problem, we multiply by the ones position and the tens position.

$8\times0=0$

$8\times1=8$

$\frac{\begin{array}[b]{r}10\\ \times\ 8\end{array}}{ \ \ \ \space80}$

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Example Question #31 : Multiply One Digit Numbers By Multiples Of 10: Ccss.Math.Content.3.Nbt.A.3

$\frac{\begin{array}[b]{r}30\\ \times\ 9\end{array}}{ \ \ \ \space}$

Possible Answers:

250

280

290

270

260

Correct answer:

270

Explanation:

To solve this problem, we multiply by the ones position and the tens position.

$9\times0=0$

$9\times3=27$

$\frac{\begin{array}[b]{r}30\\ \times\ 9\end{array}}{ \ \space270}$

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Example Question #131 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}50\\ \times\ 1\end{array}}{ \ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

To solve this problem, we multiply by the ones position and the tens position.

$1\times0=0$

$1\times5=5$

$\frac{\begin{array}[b]{r}50\\ \times\ 1\end{array}}{ \ \ \space50}$

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Example Question #2901 : Operations

$\frac{\begin{array}[b]{r}60\\ \times\ 2\end{array}}{ \ \ \ \space}$

Possible Answers:

140

150

130

120

110

Correct answer:

120

Explanation:

To solve this problem, we multiply by the ones position and the tens position.

$2\times0=0$

$2\times6=12$

$\frac{\begin{array}[b]{r}60\\ \times\ 2\end{array}}{ \ \space120}$

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Example Question #441 : How To Multiply

$\frac{\begin{array}[b]{r}70\\ \times\ 3\end{array}}{ \ \ \ \space}$

Possible Answers:

210

200

240

220

230

Correct answer:

210

Explanation:

To solve this problem, we multiply by the ones position and the tens position.

$3\times0=0$

$3\times7=21$

$\frac{\begin{array}[b]{r}70\\ \times\ 3\end{array}}{ \ \space210}$

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Example Question #442 : How To Multiply

$\frac{\begin{array}[b]{r}80\\ \times\ 4\end{array}}{ \ \ \ \space}$

Possible Answers:

320

360

340

350

330

Correct answer:

320

Explanation:

To solve this problem, we multiply by the ones position and the tens position.

$4\times0=0$

$4\times8=32$

$\frac{\begin{array}[b]{r}80\\ \times\ 4\end{array}}{ \ \space320}$

Report an Error

Example Question #2904 : Operations

$\frac{\begin{array}[b]{r}90\\ \times\ 5\end{array}}{ \ \ \ \space}$

Possible Answers:

430

420

450

440

410

Correct answer:

450

Explanation:

To solve this problem, we multiply by the ones position and the tens position.

$5\times0=0$

$5\times9=45$

$\frac{\begin{array}[b]{r}90\\ \times\ 5\end{array}}{ \ \space450}$

Report an Error

Example Question #2905 : Operations

$\frac{\begin{array}[b]{r}10\\ \times\ 6\end{array}}{ \ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

To solve this problem, we multiply by the ones position and the tens position.

$6\times0=0$

$6\times1=6$

$\frac{\begin{array}[b]{r}10\\ \times\ 6\end{array}}{ \ \ \space60}$

Report an Error

Example Question #2906 : Operations

$\frac{\begin{array}[b]{r}30\\ \times\ 7\end{array}}{ \ \ \ \space}$

Possible Answers:

210

200

240

230

220

Correct answer:

210

Explanation:

To solve this problem, we multiply by the ones position and the tens position.

$7\times0=0$

$7\times3=21$

$\frac{\begin{array}[b]{r}30\\ \times\ 7\end{array}}{ \ \space210}$

Report an Error

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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

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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 #71 : Operations

Example Question #31 : Multiply One Digit Numbers By Multiples Of 10: Ccss.Math.Content.3.Nbt.A.3

Example Question #31 : Multiply One Digit Numbers By Multiples Of 10: Ccss.Math.Content.3.Nbt.A.3

Example Question #131 : Number & Operations In Base Ten

Example Question #2901 : Operations

Example Question #441 : How To Multiply

Example Question #442 : How To Multiply

Example Question #2904 : Operations

Example Question #2905 : Operations

Example Question #2906 : Operations

All Common Core: 3rd Grade Math Resources

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