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Common Core: 1st Grade Math : Place Value and Properties of Operations to Add and Subtract

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 #981 : Numbers And Operations

$\frac{\begin{array}[b]{r}70\\ -\ 40\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}70\\ -\ 40\end{array}}{ \ \ \space}$

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

7-4=3

$\frac{\begin{array}[b]{r}70\\ -\ 40\end{array}}{ \ \ \ \space30}$

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Example Question #11 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

$\frac{\begin{array}[b]{r}60\\ -\ 50\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}60\\ -\ 50\end{array}}{ \ \ \space}$

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

6-5=1

$\frac{\begin{array}[b]{r}60\\ -\ 50\end{array}}{ \ \ \ \space10}$

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Example Question #983 : Numbers And Operations

$\frac{\begin{array}[b]{r}90\\ -\ 20\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}90\\ -\ 20\end{array}}{ \ \ \space}$

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

9-2=7

$\frac{\begin{array}[b]{r}90\\ -\ 20\end{array}}{ \ \ \ \space70}$

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Example Question #984 : Numbers And Operations

$\frac{\begin{array}[b]{r}80\\ -\ 40\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}80\\ -\ 40\end{array}}{ \ \ \space}$

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

8-4=4

$\frac{\begin{array}[b]{r}80\\ -\ 40\end{array}}{ \ \ \ \space40}$

Report an Error

Example Question #985 : Numbers And Operations

$\frac{\begin{array}[b]{r}70\\ -\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

$\frac{\begin{array}[b]{r}70\\ -\ 10\end{array}}{ \ \ \space}$

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

7-1=6

$\frac{\begin{array}[b]{r}70\\ -\ 10\end{array}}{ \ \ \ \ \space60}$

Report an Error

Example Question #986 : Numbers And Operations

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

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 #991 : Numbers And Operations

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

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

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

Report an Error

Example Question #992 : Numbers And Operations

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

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

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

Report an Error

Example Question #993 : Numbers And Operations

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

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 #994 : Numbers And Operations

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

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

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

Report an Error

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All Common Core: 1st Grade Math Resources

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Common Core: 1st Grade Math : Place Value and Properties of Operations to Add and Subtract

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

All Common Core: 1st Grade Math Resources

Example Questions

Example Question #981 : Numbers And Operations

Example Question #11 : Subtract Multiples Of 10 From Multiples Of 10: Ccss.Math.Content.1.Nbt.C.6

Example Question #983 : Numbers And Operations

Example Question #984 : Numbers And Operations

Example Question #985 : Numbers And Operations

Example Question #986 : Numbers And Operations

Example Question #991 : Numbers And Operations

Example Question #992 : Numbers And Operations

Example Question #993 : Numbers And Operations

Example Question #994 : Numbers And Operations

All Common Core: 1st Grade Math Resources

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