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Common Core: 1st Grade Math : Number & Operations in Base Ten

Study concepts, example questions & explanations for Common Core: 1st Grade Math

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All Common Core: 1st Grade Math Resources

7 Diagnostic Tests 180 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

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Example Question #995 : Numbers And Operations

$\frac{\begin{array}[b]{r}90\\ -\ 60\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}90\\ -\ 60\end{array}}{ \ \ \space}$

When we subtract two digit numbers, we always start with the ones place, on the right, and work our way to the left.

0-0=0

9-6=3

$\frac{\begin{array}[b]{r}90\\ -\ 60\end{array}}{ \ \ \ \space30}$

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Example Question #996 : Numbers And Operations

$\frac{\begin{array}[b]{r}80\\ -\ 20\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}80\\ -\ 20\end{array}}{ \ \ \space}$

When we subtract two digit numbers, we always start with the ones place, on the right, and work our way to the left.

0-0=0

8-2=6

$\frac{\begin{array}[b]{r}80\\ -\ 20\end{array}}{ \ \ \ \space60}$

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Example Question #361 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}70\\ -\ 30\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}70\\ -\ 30\end{array}}{ \ \ \space}$

When we subtract two digit numbers, we always start with the ones place, on the right, and work our way to the left.

0-0=0

7-3=4

$\frac{\begin{array}[b]{r}70\\ -\ 30\end{array}}{ \ \ \ \space40}$

Report an Error

Example Question #362 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}60\\ -\ 20\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}60\\ -\ 20\end{array}}{ \ \ \space}$

When we subtract two digit numbers, we always start with the ones place, on the right, and work our way to the left.

0-0=0

6-2=4

$\frac{\begin{array}[b]{r}60\\ -\ 20\end{array}}{ \ \ \ \space40}$

Report an Error

Example Question #363 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}50\\ -\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}50\\ -\ 10\end{array}}{ \ \ \space}$

When we subtract two digit numbers, we always start with the ones place, on the right, and work our way to the left.

0-0=0

5-1=4

$\frac{\begin{array}[b]{r}50\\ -\ 10\end{array}}{ \ \ \ \space40}$

Report an Error

Example Question #41 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

$\frac{\begin{array}[b]{r}40\\ -\ 40\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}40\\ -\ 40\end{array}}{ \ \ \space}$

When we subtract two digit numbers, we always start with the ones place, on the right, and work our way to the left.

0-0=0

4-4=0

$\frac{\begin{array}[b]{r}40\\ -\ 40\end{array}}{ \ \ \ \ \ \space0}$

Report an Error

Example Question #365 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}90\\ -\ 40\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}90\\ -\ 40\end{array}}{ \ \ \space}$

When we subtract two digit numbers, we always start with the ones place, on the right, and work our way to the left.

0-0=0

9-4=5

$\frac{\begin{array}[b]{r}90\\ -\ 40\end{array}}{ \ \ \ \space50}$

Report an Error

Example Question #366 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}80\\ -\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}80\\ -\ 10\end{array}}{ \ \ \space}$

When we subtract two digit numbers, we always start with the ones place, on the right, and work our way to the left.

0-0=0

8-1=7

$\frac{\begin{array}[b]{r}80\\ -\ 10\end{array}}{ \ \ \ \space70}$

Report an Error

Example Question #367 : Number & Operations In Base Ten

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

Possible Answers:

Correct answer:

Explanation:

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

When we subtract two digit numbers, we always start with the ones place, on the right, and work our way to the left.

0-0=0

7-7=0

$\frac{\begin{array}[b]{r}70\\ -\ 70\end{array}}{ \ \ \ \ \ \space0}$

Report an Error

Example Question #781 : How To Subtract

$\frac{\begin{array}[b]{r}60\\ -\ 30\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}60\\ -\ 30\end{array}}{ \ \ \space}$

When we subtract two digit numbers, we always start with the ones place, on the right, and work our way to the left.

0-0=0

6-3=3

$\frac{\begin{array}[b]{r}60\\ -\ 30\end{array}}{ \ \ \ \space30}$

Report an Error

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Common Core: 1st Grade Math : Number & Operations in Base Ten

Study concepts, example questions & explanations for Common Core: 1st Grade Math

All Common Core: 1st Grade Math Resources

Example Questions

Example Question #995 : Numbers And Operations

Example Question #996 : Numbers And Operations

Example Question #361 : Number & Operations In Base Ten

Example Question #362 : Number & Operations In Base Ten

Example Question #363 : Number & Operations In Base Ten

Example Question #41 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

Example Question #365 : Number & Operations In Base Ten

Example Question #366 : Number & Operations In Base Ten

Example Question #367 : Number & Operations In Base Ten

Example Question #781 : How To Subtract

All Common Core: 1st Grade Math Resources

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