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Common Core: 1st Grade Math : Add and Subtract 10 to Two-Digit Numbers: CCSS.MATH.CONTENT.1.NBT.C.5

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Example Question #1 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

$\frac{\begin{array}[b]{r}15\\ +\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

When we add to a two digit number, the only number that changes in our answer is the tens position, and it will always go up by . Mentally, we can add to the number in the tens place to find our answer.

1+1=2

$\frac{\begin{array}[b]{r}15\\ +\ 10\end{array}}{ \ \ \ \ \space25}$

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Example Question #2 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

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

Possible Answers:

Correct answer:

Explanation:

1+1=2

$\frac{\begin{array}[b]{r}10\\ +\ 10\end{array}}{ \ \ \ \space20}$

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Example Question #3 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

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

Possible Answers:

Correct answer:

Explanation:

2+1=3

$\frac{\begin{array}[b]{r}20\\ +\ 10\end{array}}{ \ \ \ \space30}$

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Example Question #4 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

$\frac{\begin{array}[b]{r}25\\ +\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

2+1=3

$\frac{\begin{array}[b]{r}25\\ +\ 10\end{array}}{ \ \ \ \space35}$

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Example Question #1 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

$\frac{\begin{array}[b]{r}30\\ +\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

3+1=4

$\frac{\begin{array}[b]{r}20\\ +\ 10\end{array}}{ \ \ \ \space40}$

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Example Question #6 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

$\frac{\begin{array}[b]{r}35\\ +\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

3+1=4

$\frac{\begin{array}[b]{r}35\\ +\ 10\end{array}}{ \ \ \ \space45}$

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Example Question #7 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

$\frac{\begin{array}[b]{r}40\\ +\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

4+1=5

$\frac{\begin{array}[b]{r}40\\ +\ 10\end{array}}{ \ \ \ \space50}$

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Example Question #8 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

$\frac{\begin{array}[b]{r}45\\ +\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

4+1=5

$\frac{\begin{array}[b]{r}45\\ +\ 10\end{array}}{ \ \ \ \space55}$

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Example Question #9 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

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

Possible Answers:

Correct answer:

Explanation:

5+1=6

$\frac{\begin{array}[b]{r}50\\ +\ 10\end{array}}{ \ \ \ \space60}$

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Example Question #10 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

$\frac{\begin{array}[b]{r}55\\ +\ 10\end{array}}{ \ \ \space}$

Possible Answers:

Correct answer:

Explanation:

5+1=6

$\frac{\begin{array}[b]{r}55\\ +\ 10\end{array}}{ \ \ \ \space65}$

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Common Core: 1st Grade Math : Add and Subtract 10 to Two-Digit Numbers: CCSS.MATH.CONTENT.1.NBT.C.5

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

All Common Core: 1st Grade Math Resources

Example Questions

Example Question #1 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Example Question #2 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Example Question #3 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Example Question #4 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Example Question #1 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Example Question #6 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Example Question #7 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Example Question #8 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Example Question #9 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

Example Question #10 : Add And Subtract 10 To Two Digit Numbers: Ccss.Math.Content.1.Nbt.C.5

All Common Core: 1st Grade Math Resources

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