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Common Core: 4th Grade Math : Number & Operations in Base Ten

Study concepts, example questions & explanations for Common Core: 4th Grade Math

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All Common Core: 4th Grade Math Resources

7 Diagnostic Tests 189 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #261 : Number & Operations In Base Ten

Solve:

$\frac{\begin{array}[b]{r}385\\ -\ 231\end{array}}{\space }$

Possible Answers:

153

152

155

154

Correct answer:

154

Explanation:

When we subtract multi-digit numbers, we start with the digits in the ones place and move to the left.

Let's look at the numbers in the ones place:

$\frac{\begin{array}[b]{r}5\\ -\ 1\end{array}}{\ \ \ 4 }$

Next, let's look at the numbers in the tens place:

$\frac{\begin{array}[b]{r}8\\ -\ 3\end{array}}{\ \ \ 5 }$

Finally, we can subtract the numbers in the hundreds place:

$\frac{\begin{array}[b]{r}3\\ -\ 2\end{array}}{\ \ \ 1}$

Your final answer should be 154

$\frac{\begin{array}[b]{r}385\\ -\ 231\end{array}}{\ \ \ 154}$

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Example Question #11 : Subtracting Multi Digit Numbers

Solve:

$\frac{\begin{array}[b]{r}566\\ -\ 123\end{array}}{\space }$

Possible Answers:

446

444

443

445

Correct answer:

443

Explanation:

When we subtract multi-digit numbers, we start with the digits in the ones place and move to the left.

Let's look at the numbers in the ones place:

$\frac{\begin{array}[b]{r}6\\ -\ 3\end{array}}{\ \ \ 3 }$

Next, let's look at the numbers in the tens place:

$\frac{\begin{array}[b]{r}6\\ -\ 2\end{array}}{\ \ \ 4 }$

Finally, we can subtract the numbers in the hundreds place:

$\frac{\begin{array}[b]{r}5\\ -\ 1\end{array}}{\ \ \ 4}$

Your final answer should be 443

$\frac{\begin{array}[b]{r}566\\ -\ 123\end{array}}{\ \ \ \ 443}$

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Example Question #12 : Subtracting Multi Digit Numbers

Solve the following:

$\frac{\begin{array}[b]{r}417\\ -\ 250\end{array}}{\space }$

Possible Answers:

168

167

166

169

Correct answer:

167

Explanation:

When we subtract multi-digit numbers, we start with the digits in the ones place and move to the left.

Let's look at the numbers in the ones place:

$\frac{\begin{array}[b]{r}7\\ -\ 0\end{array}}{\ \ \ 7 }$

Next, let's look at the numbers in the tens place:

$\frac{\begin{array}[b]{r}1\\ -\ 5\end{array}}{\ \ \ }$

When the top number is smaller than the bottom number, we have to borrow from the number to the left because we can't take away from since is the smaller number. In this case, we are going to look to the . We only ever need to take away from the number to the left. For this problem, that will leave us with a to replace the . So far, your work should look something like this:

$\frac{\begin{array}[b]{r}^{3} \not417\\ -\ 250\end{array}}{\space }$

Remember, we've borrowed from the hundreds place, so we can put a in front of the number in the tens place. So far, your work should look something like this:

$\frac{\begin{array}[b]{r}^{3} \not4\ ^{11}\not1\ \ \ \ \ 7\\ -\ 2 \ \ \ \ \ 5\ \ \ \ \ 0\end{array}}{\space }$

Now, we can subtract the numbers in the tens place:

$\frac{\begin{array}[b]{r}11\\ -\ 5\end{array}}{\ \ \ 6}$

Next, we can subtract the numbers in the hundreds place:

$\frac{\begin{array}[b]{r}3\\ -\ 2\end{array}}{\ \ \ 1}$

Your final answer should be 167

$\frac{\begin{array}[b]{r}^{3} \not4\ ^{11}\not1\ \ \ \ \ 7\\ -\ 2 \ \ \ \ \ 5\ \ \ \ \ 0\end{array}}{\ \ \ \ 1 \ \ \ \ \ 6\ \ \ \ \ 7}$

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All Common Core: 4th Grade Math Resources

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Common Core: 4th Grade Math : Number & Operations in Base Ten

Study concepts, example questions & explanations for Common Core: 4th Grade Math

All Common Core: 4th Grade Math Resources

Example Questions

Example Question #261 : Number & Operations In Base Ten

Example Question #11 : Subtracting Multi Digit Numbers

Example Question #12 : Subtracting Multi Digit Numbers

All Common Core: 4th Grade Math Resources

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