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MAP 2nd Grade Math : Operations and Algebraic Thinking

Study concepts, example questions & explanations for MAP 2nd Grade Math

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Example Questions

Example Question #1 : Operations And Algebraic Thinking

Solve:

$\frac{\begin{array}[b]{r}75\\ +\ 10\end{array}}{ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}75\\ +\ 10\end{array}}{ \ \ \space}$

Possible Answers:

$\displaystyle 80$

$\displaystyle 75$

$\displaystyle 85$

$\displaystyle 70$

Correct answer:

$\displaystyle 85$

Explanation:

When we add $\displaystyle 10$ to a two digit number, the only number that changes in our answer is the tens position, and it will always go up by $\displaystyle 1$. Mentally, we can add $\displaystyle 1$ to the number in the tens place to find our answer.

7+1=8 $\displaystyle 7+1=8$

$\frac{\begin{array}[b]{r}75\\ +\ 10\end{array}}{ \ \ \ \space85}$ $\displaystyle \frac{\begin{array}[b]{r}75\\ +\ 10\end{array}}{ \ \ \ \space85}$

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Example Question #2 : Operations And Algebraic Thinking

David is $23\textup{ inches}$ $\displaystyle 23\textup{ inches}$ taller than Alison. Alison is $53\textup{ inches}$ $\displaystyle 53\textup{ inches}$ tall. How tall is David?

Possible Answers:

$80\textup{ inches}$ $\displaystyle 80\textup{ inches}$

$76\textup{ inches}$ $\displaystyle 76\textup{ inches}$

$82\textup{ inches}$ $\displaystyle 82\textup{ inches}$

$84\textup{ inches}$ $\displaystyle 84\textup{ inches}$

Correct answer:

$76\textup{ inches}$ $\displaystyle 76\textup{ inches}$

Explanation:

This is an addition problem because we have the difference in height from the question. Alison is $\displaystyle 53$ inches tall and David is $\displaystyle 23$ inches taller than her, $\displaystyle 23$ is our difference. We can add our difference to Alison's height to find out how tall David is.

$\frac{\begin{array}[b]{r}53\\ +\ 23\end{array}}{ \ \ \ \space 76}$ $\displaystyle \frac{\begin{array}[b]{r}53\\ +\ 23\end{array}}{ \ \ \ \space 76}$

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Example Question #3 : Operations And Algebraic Thinking

Add:

$\frac{\begin{array}[b]{r}51\\ +\ 12\end{array}}{ \ \ \space}$ $\displaystyle \frac{\begin{array}[b]{r}51\\ +\ 12\end{array}}{ \ \ \space}$

Possible Answers:

$\displaystyle 64$

$\displaystyle 66$

$\displaystyle 65$

$\displaystyle 63$

Correct answer:

$\displaystyle 63$

Explanation:

When we add two digit numbers, we start by adding the numbers in the ones place.

$\frac{\begin{array}[b]{r}5{\color{Red} 1}\\ +\ 1{\color{Red} 2}\end{array}}{ \ \ \ \ \ \space3}$ $\displaystyle \frac{\begin{array}[b]{r}5{\color{Red} 1}\\ +\ 1{\color{Red} 2}\end{array}}{ \ \ \ \ \ \space3}$

Next, we need to add the numbers in the tens place.

$\frac{\begin{array}[b]{r}{\color{Red} 5}1\\ +\ {\color{Red} 1}2\end{array}}{ \ \ \ \ \space63}$ $\displaystyle \frac{\begin{array}[b]{r}{\color{Red} 5}1\\ +\ {\color{Red} 1}2\end{array}}{ \ \ \ \ \space63}$

The final answer is $\displaystyle 63$

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MAP 2nd Grade Math : Operations and Algebraic Thinking

Study concepts, example questions & explanations for MAP 2nd Grade Math

All MAP 2nd Grade Math Resources

Example Questions

Example Question #1 : Operations And Algebraic Thinking

Example Question #2 : Operations And Algebraic Thinking

Example Question #3 : Operations And Algebraic Thinking

All MAP 2nd Grade Math Resources

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