Common Core: 2nd Grade Math : Number & Operations in Base Ten

Study concepts, example questions & explanations for Common Core: 2nd Grade Math

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Example Questions

Example Question #271 : Whole And Part

The number below is written in expanded form. What is the number as a numeral? 

\(\displaystyle 300+90+8\)

 

Possible Answers:

\(\displaystyle 893\)

\(\displaystyle 398\)

\(\displaystyle 3908\)

\(\displaystyle 300908\)

\(\displaystyle 30098\)

Correct answer:

\(\displaystyle 398\)

Explanation:

When a number is in expanded form, you add the numbers together to find the numeral. 

The numeral form of \(\displaystyle 300+90+8=398\).

\(\displaystyle \frac{\begin{array}[b]{r}300\\ \ 90\\ +\ 8\end{array}}{ \ \space 398}\) 

Example Question #60 : Read And Write Numbers To 1000 By Numerals, Number Names, And Expanded Form: Ccss.Math.Content.2.Nbt.A.3

The number below is written in expanded form. What is the number as a numeral? 

\(\displaystyle 300+10+9\)

 

Possible Answers:

\(\displaystyle 139\)

\(\displaystyle 913\)

\(\displaystyle 319\)

\(\displaystyle 3109\)

\(\displaystyle 300109\)

Correct answer:

\(\displaystyle 319\)

Explanation:

When a number is in expanded form, you add the numbers together to find the numeral. 

The numeral form of \(\displaystyle 300+10+9=319\).

\(\displaystyle \frac{\begin{array}[b]{r}300\\ \ 10\\ +\ 9\end{array}}{ \ \space 319}\) 

Example Question #61 : Read And Write Numbers To 1000 By Numerals, Number Names, And Expanded Form: Ccss.Math.Content.2.Nbt.A.3

The number below is written in expanded form. What is the number as a numeral? 

\(\displaystyle 300+20+1\)

 

Possible Answers:

\(\displaystyle 3201\)

\(\displaystyle 132\)

\(\displaystyle 300201\)

\(\displaystyle 231\)

\(\displaystyle 321\)

Correct answer:

\(\displaystyle 321\)

Explanation:

When a number is in expanded form, you add the numbers together to find the numeral. 

The numeral form of \(\displaystyle 300+20+1=321\).

\(\displaystyle \frac{\begin{array}[b]{r}300\\ \ 20\\ +\ 1\end{array}}{ \ \space 321}\) 

Example Question #62 : Read And Write Numbers To 1000 By Numerals, Number Names, And Expanded Form: Ccss.Math.Content.2.Nbt.A.3

The number below is written in expanded form. What is the number as a numeral? 

\(\displaystyle 300+30+2\)

 

Possible Answers:

\(\displaystyle 332\)

\(\displaystyle 302\)

\(\displaystyle 3302\)

\(\displaystyle 233\)

\(\displaystyle 300302\)

Correct answer:

\(\displaystyle 332\)

Explanation:

When a number is in expanded form, you add the numbers together to find the numeral. 

The numeral form of \(\displaystyle 300+30+2=332\).

\(\displaystyle \frac{\begin{array}[b]{r}300\\ \ 30\\ +\ 2\end{array}}{ \ \space 332}\) 

Example Question #63 : Read And Write Numbers To 1000 By Numerals, Number Names, And Expanded Form: Ccss.Math.Content.2.Nbt.A.3

The number below is written in expanded form. What is the number as a numeral? 

\(\displaystyle 300+40+3\)

 

Possible Answers:

\(\displaystyle 433\)

\(\displaystyle 3043\)

\(\displaystyle 300403\)

\(\displaystyle 343\)

\(\displaystyle 3403\)

Correct answer:

\(\displaystyle 343\)

Explanation:

When a number is in expanded form, you add the numbers together to find the numeral. 

The numeral form of \(\displaystyle 300+40+3=343\).

\(\displaystyle \frac{\begin{array}[b]{r}300\\ \ 40\\ +\ 3\end{array}}{ \ \space 343}\) 

Example Question #64 : Read And Write Numbers To 1000 By Numerals, Number Names, And Expanded Form: Ccss.Math.Content.2.Nbt.A.3

The number below is written in expanded form. What is the number as a numeral? 

\(\displaystyle 300+50+4\)

 

Possible Answers:

\(\displaystyle 453\)

\(\displaystyle 3504\)

\(\displaystyle 345\)

\(\displaystyle 354\)

\(\displaystyle 300504\)

Correct answer:

\(\displaystyle 354\)

Explanation:

When a number is in expanded form, you add the numbers together to find the numeral. 

The numeral form of \(\displaystyle 300+50+4=354\).

\(\displaystyle \frac{\begin{array}[b]{r}300\\ \ 50\\ +\ 4\end{array}}{ \ \space 354}\) 

Example Question #65 : Read And Write Numbers To 1000 By Numerals, Number Names, And Expanded Form: Ccss.Math.Content.2.Nbt.A.3

The number below is written in expanded form. What is the number as a numeral? 

\(\displaystyle 300+60+5\)

 

Possible Answers:

\(\displaystyle 3605\)

\(\displaystyle 365\)

\(\displaystyle 300605\)

\(\displaystyle 563\)

\(\displaystyle 356\)

Correct answer:

\(\displaystyle 365\)

Explanation:

When a number is in expanded form, you add the numbers together to find the numeral. 

The numeral form of \(\displaystyle 300+60+5=365\).

\(\displaystyle \frac{\begin{array}[b]{r}300\\ \ 60\\ +\ 5\end{array}}{ \ \space 365}\) 

Example Question #66 : Read And Write Numbers To 1000 By Numerals, Number Names, And Expanded Form: Ccss.Math.Content.2.Nbt.A.3

The number below is written in expanded form. What is the number as a numeral? 

\(\displaystyle 300+20+7\)

 

Possible Answers:

\(\displaystyle 3207\)

\(\displaystyle 300207\)

\(\displaystyle 237\)

\(\displaystyle 327\)

\(\displaystyle 723\)

Correct answer:

\(\displaystyle 327\)

Explanation:

When a number is in expanded form, you add the numbers together to find the numeral. 

The numeral form of \(\displaystyle 300+20+7=327\).

\(\displaystyle \frac{\begin{array}[b]{r}300\\ \ 20\\ +\ 7\end{array}}{ \ \space 327}\) 

Example Question #67 : Read And Write Numbers To 1000 By Numerals, Number Names, And Expanded Form: Ccss.Math.Content.2.Nbt.A.3

The number below is written in expanded form. What is the number as a numeral? 

\(\displaystyle 300+70+3\)

 

Possible Answers:

\(\displaystyle 30703\)

\(\displaystyle 70303\)

\(\displaystyle 373\)

\(\displaystyle 300703\)

\(\displaystyle 733\)

Correct answer:

\(\displaystyle 373\)

Explanation:

When a number is in expanded form, you add the numbers together to find the numeral. 

The numeral form of \(\displaystyle 300+70+3=373\).

\(\displaystyle \frac{\begin{array}[b]{r}300\\ \ 70\\ +\ 3\end{array}}{ \ \space 373}\) 

Example Question #68 : Read And Write Numbers To 1000 By Numerals, Number Names, And Expanded Form: Ccss.Math.Content.2.Nbt.A.3

The number below is written in expanded form. What is the number as a numeral? 

\(\displaystyle 300+90+4\)

 

Possible Answers:

\(\displaystyle 394\)

\(\displaystyle 493\)

\(\displaystyle 30904\)

\(\displaystyle 3094\)

\(\displaystyle 300904\)

Correct answer:

\(\displaystyle 394\)

Explanation:

When a number is in expanded form, you add the numbers together to find the numeral. 

The numeral form of \(\displaystyle 300+90+4=394\).

\(\displaystyle \frac{\begin{array}[b]{r}300\\ \ 90\\ +\ 4\end{array}}{ \ \space 394}\) 

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