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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

Example Question #72 : Place Value And Properties Of Operations To Add And Subtract

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

Possible Answers:

Correct answer:

Explanation:

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

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

5-5=0

$\frac{\begin{array}[b]{r}50\\ -\ 50\end{array}}{ \ \ \ \ \ \space0}$

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Example Question #73 : Place Value And Properties Of Operations To Add And Subtract

$\frac{\begin{array}[b]{r}40\\ -\ 20\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}40\\ -\ 20\end{array}}{ \ \ \space}$

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

4-2=2

$\frac{\begin{array}[b]{r}40\\ -\ 20\end{array}}{ \ \ \ \space20}$

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Example Question #19 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

$\frac{\begin{array}[b]{r}20\\ -\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}20\\ -\ 10\end{array}}{ \ \ \space}$

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

2-1=1

$\frac{\begin{array}[b]{r}20\\ -\ 10\end{array}}{ \ \ \ \space10}$

Report an Error

Example Question #74 : Place Value And Properties Of Operations To Add And Subtract

$\frac{\begin{array}[b]{r}80\\ -\ 50\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}80\\ -\ 50\end{array}}{ \ \ \space}$

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

8-5=3

$\frac{\begin{array}[b]{r}80\\ -\ 50\end{array}}{ \ \ \ \space30}$

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Example Question #81 : Place Value And Properties Of Operations To Add And Subtract

$\frac{\begin{array}[b]{r}90\\ -\ 30\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}90\\ -\ 30\end{array}}{ \ \ \space}$

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

9-3=6

$\frac{\begin{array}[b]{r}90\\ -\ 30\end{array}}{ \ \ \ \space60}$

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Example Question #22 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

$\frac{\begin{array}[b]{r}70\\ -\ 50\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}70\\ -\ 50\end{array}}{ \ \ \space}$

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

7-5=2

$\frac{\begin{array}[b]{r}70\\ -\ 50\end{array}}{ \ \ \ \space20}$

Report an Error

Example Question #23 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

$\frac{\begin{array}[b]{r}60\\ -\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}60\\ -\ 10\end{array}}{ \ \ \space}$

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

6-1=

$\frac{\begin{array}[b]{r}60\\ -\ 10\end{array}}{ \ \ \ \space50}$

Report an Error

Example Question #24 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

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

Possible Answers:

Correct answer:

Explanation:

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

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

1-1=

$\frac{\begin{array}[b]{r}10\\ -\ 10\end{array}}{ \ \ \ \ \ \space0}$

Report an Error

Example Question #341 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}90\\ -\ 70\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}90\\ -\ 70\end{array}}{ \ \ \space}$

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

9-7=2

$\frac{\begin{array}[b]{r}90\\ -\ 70\end{array}}{ \ \ \ \space20}$

Report an Error

Example Question #794 : How To Subtract

$\frac{\begin{array}[b]{r}90\\ -\ 80\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}90\\ -\ 80\end{array}}{ \ \ \space}$

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

9-8=1

$\frac{\begin{array}[b]{r}90\\ -\ 80\end{array}}{ \ \ \ \space10}$

Report an Error

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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

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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 #72 : Place Value And Properties Of Operations To Add And Subtract

Example Question #73 : Place Value And Properties Of Operations To Add And Subtract

Example Question #19 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

Example Question #74 : Place Value And Properties Of Operations To Add And Subtract

Example Question #81 : Place Value And Properties Of Operations To Add And Subtract

Example Question #22 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

Example Question #23 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

Example Question #24 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

Example Question #341 : Number & Operations In Base Ten

Example Question #794 : How To Subtract

All Common Core: 1st Grade Math Resources

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