Common Core: 5th Grade Math : Common Core Math: Grade 5

Study concepts, example questions & explanations for Common Core: 5th Grade Math

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Example Questions

Example Question #41 : Explain Patterns When Multiplying By A Power Of 10: Ccss.Math.Content.5.Nbt.A.2

What is \(\displaystyle 5.1\times10^2\) in standard form? 

Possible Answers:

\(\displaystyle 510\)

\(\displaystyle 51\textup,100\)

\(\displaystyle 5\textup,100\)

\(\displaystyle 51\)

\(\displaystyle 51\textup,00\)

Correct answer:

\(\displaystyle 510\)

Explanation:

The power of \(\displaystyle 10\) tells us how to move our decimal. Because we have a positive \(\displaystyle 2\) power, we move our decimal over \(\displaystyle 2\) places to the right. 

\(\displaystyle 5.1\rightarrow 510.\)

Example Question #79 : Number & Operations In Base Ten

What is \(\displaystyle 6.6\times10^3\) in standard form? 

Possible Answers:

\(\displaystyle 6\textup,600\)

\(\displaystyle 60\textup,600\)

\(\displaystyle 66\textup,000\)

\(\displaystyle 66\)

\(\displaystyle 660\)

Correct answer:

\(\displaystyle 6\textup,600\)

Explanation:

The power of \(\displaystyle 10\) tells us how to move our decimal. Because we have a positive \(\displaystyle 3\) power, we move our decimal over \(\displaystyle 3\) places to the right. 

\(\displaystyle 6.6\rightarrow 6600.\)

Example Question #71 : Number & Operations In Base Ten

What is \(\displaystyle 3\times10^2\) in standard form? 

Possible Answers:

\(\displaystyle 30\textup,000\)

\(\displaystyle 300\textup,000\)

\(\displaystyle 30\)

\(\displaystyle 300\)

\(\displaystyle 3\textup,000\)

Correct answer:

\(\displaystyle 300\)

Explanation:

The power of \(\displaystyle 10\) tells us how to move our decimal. Because we have a positive \(\displaystyle 2\) power, we move our decimal over \(\displaystyle 2\) places to the right. 

\(\displaystyle 3.\rightarrow 300.\)

Example Question #261 : Common Core Math: Grade 5

What is \(\displaystyle 2\times10^5\) in standard form? 

Possible Answers:

\(\displaystyle 20\textup,000\)

\(\displaystyle 20\)

\(\displaystyle 200\)

\(\displaystyle 2\textup,000\)

\(\displaystyle 200\textup,000\)

Correct answer:

\(\displaystyle 200\textup,000\)

Explanation:

The power of \(\displaystyle 10\) tells us how to move our decimal. Because we have a positive \(\displaystyle 5\) power, we move our decimal over \(\displaystyle 5\) places to the right. 

\(\displaystyle 2.\rightarrow 200000.\)

Example Question #81 : Number & Operations In Base Ten

What is \(\displaystyle 1\times10^4\) in standard form? 

Possible Answers:

\(\displaystyle 100\)

\(\displaystyle 10\)

\(\displaystyle 100\textup,000\)

\(\displaystyle 10\textup,000\)

\(\displaystyle 1\textup,000\)

Correct answer:

\(\displaystyle 10\textup,000\)

Explanation:

The power of \(\displaystyle 10\) tells us how to move our decimal. Because we have a positive \(\displaystyle 4\) power, we move our decimal over \(\displaystyle 4\) places to the right. 

\(\displaystyle 1.\rightarrow 10000.\)

Example Question #261 : Common Core Math: Grade 5

What is \(\displaystyle 9\times10^8\) in standard form? 

Possible Answers:

\(\displaystyle 900\textup,000\)

\(\displaystyle 90\textup,000\textup,000\)

\(\displaystyle 900\textup,000\textup,000\)

\(\displaystyle 9\textup,000\textup,000\)

\(\displaystyle 90\textup,000\)

Correct answer:

\(\displaystyle 900\textup,000\textup,000\)

Explanation:

The power of \(\displaystyle 10\) tells us how to move our decimal. Because we have a positive \(\displaystyle 8\) power, we move our decimal over \(\displaystyle 8\) places to the right. 

\(\displaystyle 9.\rightarrow 900000000.\) 

Example Question #81 : Number & Operations In Base Ten

What is \(\displaystyle 6\times10^2\) in standard form? 

Possible Answers:

\(\displaystyle 6\textup,000\)

\(\displaystyle 60\textup,000\)

\(\displaystyle 600\textup,000\)

\(\displaystyle 6\textup,000\textup,000\)

\(\displaystyle 600\)

Correct answer:

\(\displaystyle 600\)

Explanation:

The power of \(\displaystyle 10\) tells us how to move our decimal. Because we have a positive \(\displaystyle 2\) power, we move our decimal over \(\displaystyle 2\) places to the right. 

\(\displaystyle 6.\rightarrow 600.\)

Example Question #262 : Common Core Math: Grade 5

What is \(\displaystyle 8\times10^7\) in standard form? 

Possible Answers:

\(\displaystyle 8\textup,000\textup,000\)

\(\displaystyle 800\textup,000\textup,000\)

\(\displaystyle 80\textup,000\textup,000\)

\(\displaystyle 800\textup,000\)

\(\displaystyle 80\textup,000\)

Correct answer:

\(\displaystyle 80\textup,000\textup,000\)

Explanation:

The power of \(\displaystyle 10\) tells us how to move our decimal. Because we have a positive \(\displaystyle 7\) power, we move our decimal over \(\displaystyle 7\) places to the right. 

\(\displaystyle 8.\rightarrow 80000000.\)

Example Question #83 : Number & Operations In Base Ten

What is \(\displaystyle 7\times10^3\) in standard form? 

Possible Answers:

\(\displaystyle 700\textup,000\)

\(\displaystyle 7\textup,000\)

\(\displaystyle 70\textup,000\)

\(\displaystyle 700\)

\(\displaystyle 7\textup,000\textup,000\)

Correct answer:

\(\displaystyle 7\textup,000\)

Explanation:

The power of \(\displaystyle 10\) tells us how to move our decimal. Because we have a positive \(\displaystyle 3\) power, we move our decimal over \(\displaystyle 3\) places to the right. 

\(\displaystyle 7.\rightarrow 7000.\)

Example Question #262 : Common Core Math: Grade 5

What is \(\displaystyle 1.7\times10^1\) in standard form? 

Possible Answers:

\(\displaystyle 170\textup,000\)

\(\displaystyle 170\)

\(\displaystyle 1\textup,700\)

\(\displaystyle 17\)

\(\displaystyle 17\textup,000\)

Correct answer:

\(\displaystyle 17\)

Explanation:

The power of \(\displaystyle 10\) tells us how to move our decimal. Because we have a positive \(\displaystyle 1\) power, we move our decimal over \(\displaystyle 1\) place to the right. 

\(\displaystyle 1.7\rightarrow 17.\)

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