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Common Core: 4th Grade Math : Subtracting multi-digit numbers

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Example Question #1 : Subtracting Multi Digit Numbers

Solve:

$\frac{\begin{array}[b]{r}923\\ -\ 290\end{array}}{\space }$

Possible Answers:

636

634

635

633

Correct answer:

633

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:

$\frac{\begin{array}[b]{r}3\\ -\ 0\end{array}}{\ \ \ 3 }$

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

$\frac{\begin{array}[b]{r}2\\ -\ 9\end{array}}{\ \ \ }$

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:

$\frac{\begin{array}[b]{r}^{8} \not920\\ -\ 290\end{array}}{\space }$

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:

$\frac{\begin{array}[b]{r}^{8} \not9\ ^{12}\not2\ \ \ \ \ 3\\ -\ 2 \ \ \ \ \ 9\ \ \ \ \ 0\end{array}}{\space }$

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

$\frac{\begin{array}[b]{r}12\\ -\ 9\end{array}}{\ \ \ 3}$

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

$\frac{\begin{array}[b]{r}8\\ -\ 2\end{array}}{\ \ \ 6}$

Your final answer should be 633

$\frac{\begin{array}[b]{r}^{8} \not9\ ^{12}\not2\ \ \ \ \ 3\\ -\ 2 \ \ \ \ \ 9\ \ \ \ \ 0\end{array}}{\ \ \ 6 \ \ \ \ \ 3\ \ \ \ \ 3}$

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Example Question #2 : Subtracting Multi Digit Numbers

Solve:

$\frac{\begin{array}[b]{r}784\\ -\ 347\end{array}}{\space }$

Possible Answers:

434

435

436

437

Correct answer:

437

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:

$\frac{\begin{array}[b]{r}4\\ -\ 7\end{array}}{\ \ \ }$

$\frac{\begin{array}[b]{r}7 ^{7}\not8 \ \ \ 4\\ -\ 3\ \ \ 4\ \ \ 7\end{array}}{\space }$

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

$\frac{\begin{array}[b]{r}6 ^{7}\not8 \ ^{14}\not4\\ -\ 3 \ \ \ 4\ \ \ \ \ 7\end{array}}{\space }$

Now, let's subtract the numbers in the ones place:

$\frac{\begin{array}[b]{r}14\\ -\ 7\end{array}}{\ \ \ 7 }$

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

$\frac{\begin{array}[b]{r}7\\ -\ 4\end{array}}{\ \ \ 3 }$

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

$\frac{\begin{array}[b]{r}7\\ -\ 3\end{array}}{\ \ \ 4}$

Your final answer should be 437

$\frac{\begin{array}[b]{r}7 ^{7}\not8 \ ^{14}\not4\\ -\ 3 \ \ \ 4\ \ \ \ \ 7\end{array}}{\ \ \ 4\ \ \ 3\ \ \ \ 7 }$

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Example Question #3 : Subtracting Multi Digit Numbers

Solve:

$\frac{\begin{array}[b]{r}819\\ -\ 670\end{array}}{\space }$

Possible Answers:

147

148

149

150

Correct answer:

149

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:

$\frac{\begin{array}[b]{r}9\\ -\ 0\end{array}}{\ \ \ 9 }$

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

$\frac{\begin{array}[b]{r}1\\ -\ 7\end{array}}{\ \ \ }$

$\frac{\begin{array}[b]{r}^{7}\not819\\ -\ 670\end{array}}{\space }$

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:

$\frac{\begin{array}[b]{r}^{7} \not8\ ^{11}\not1\ \ \ \ \ 9\\ -\ 6 \ \ \ \ \ 7\ \ \ \ \ 0\end{array}}{\space }$

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

$\frac{\begin{array}[b]{r}11\\ -\ 7\end{array}}{\ \ \ 4}$

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

$\frac{\begin{array}[b]{r}7\\ -\ 6\end{array}}{\ \ \ 1}$

Your final answer should be 149

$\frac{\begin{array}[b]{r}^{7} \not8\ ^{11}\not1\ \ \ \ \ 9\\ -\ 6 \ \ \ \ \ 7\ \ \ \ \ 0\end{array}}{\ \ \ 1\ \ \ \ \ 4\ \ \ \ \ \ 9}$

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Example Question #4 : Subtracting Multi Digit Numbers

Solve:

$\frac{\begin{array}[b]{r}426\\ -\ 289\end{array}}{\space }$

Possible Answers:

136

135

137

134

Correct answer:

137

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:

$\frac{\begin{array}[b]{r}6\\ -\ 9\end{array}}{\ \ \ }$

$\frac{\begin{array}[b]{r}4 ^{1}\not2 \ \ \ 6\\ -\ 2\ \ \ 8\ \ \ 9\end{array}}{\space }$

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

$\frac{\begin{array}[b]{r}4 ^{1}\not2 \ ^{16}\not6\\ -\ 2 \ \ \ 8\ \ \ \ \ 9\end{array}}{\space }$

Now, let's subtract the numbers in the ones place:

$\frac{\begin{array}[b]{r}16\\ -\ 9\end{array}}{\ \ \ 7 }$

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

$\frac{\begin{array}[b]{r}1\\ -\ 8\end{array}}{\ \ \ }$

$\frac{\begin{array}[b]{r}^{3}\not4 ^{1}\not2 \ ^{16}\not6\\ -\ 2 \ \ \ 8\ \ \ \ \ 9\end{array}}{\space }$

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:

$\frac{\begin{array}[b]{r}^{3}\not4 ^{11}\not2 \ ^{16}\not6\\ -\ 2 \ \ \ 8\ \ \ \ \ 9\end{array}}{\space }$

Now, let's subtract the numbers in the tens place:

$\frac{\begin{array}[b]{r}11\\ -\ 8\end{array}}{\ \ \ 3 }$

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 137

$\frac{\begin{array}[b]{r}^{3}\not4 ^{11}\not2 \ ^{16}\not6\\ -\ 2 \ \ \ 8\ \ \ \ \ 9\end{array}}{\ \ \ \ 1 \ \ \ 3\ \ \ \ \ 7 }$

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Example Question #5 : Subtracting Multi Digit Numbers

Solve:

$\frac{\begin{array}[b]{r}813\\ -\ 181\end{array}}{\space }$

Possible Answers:

632

631

634

633

Correct answer:

632

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:

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

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

$\frac{\begin{array}[b]{r}1\\ -\ 8\end{array}}{\ \ \ }$

$\frac{\begin{array}[b]{r}^{7} \not813\\ -\ 181\end{array}}{\space }$

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:

$\frac{\begin{array}[b]{r}^{7} \not8\ ^{11}\not1\ \ \ \ \ 3\\ -\ 1 \ \ \ \ \ 8\ \ \ \ \ 1\end{array}}{\space }$

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

$\frac{\begin{array}[b]{r}11\\ -\ 8\end{array}}{\ \ \ 3}$

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

$\frac{\begin{array}[b]{r}7\\ -\ 1\end{array}}{\ \ \ 6}$

Your final answer should be 632

$\frac{\begin{array}[b]{r}^{7} \not8\ ^{11}\not1\ \ \ \ \ 3\\ -\ 1 \ \ \ \ \ 8\ \ \ \ \ 1\end{array}}{\ \ \ 6 \ \ \ \ \ 3\ \ \ \ \ 2 }$

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Example Question #6 : Subtracting Multi Digit Numbers

Solve:

$\frac{\begin{array}[b]{r}979\\ -\ 930\end{array}}{\space }$

Possible Answers:

Correct answer:

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:

$\frac{\begin{array}[b]{r}9\\ -\ 0\end{array}}{\ \ \ 9 }$

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

$\frac{\begin{array}[b]{r}7\\ -\ 3\end{array}}{\ \ \ 4}$

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

$\frac{\begin{array}[b]{r}9\\ -\ 9\end{array}}{\ \ \ 0}$

Your final answer should be

$\frac{\begin{array}[b]{r}979\\ -\ 930\end{array}}{\ \ \ \ \ 49}$

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Example Question #7 : Subtracting Multi Digit Numbers

Solve:

$\frac{\begin{array}[b]{r}639\\ -\ 438\end{array}}{\space }$

Possible Answers:

202

203

200

201

Correct answer:

201

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:

$\frac{\begin{array}[b]{r}9\\ -\ 8\end{array}}{\ \ \ 1 }$

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

$\frac{\begin{array}[b]{r}3\\ -\ 3\end{array}}{\ \ \ 0 }$

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

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

Your final answer should be 201

$\frac{\begin{array}[b]{r}639\\ -\ 438\end{array}}{\ \ \ \ 201}$

Report an Error

Example Question #8 : Subtracting Multi Digit Numbers

Solve:

$\frac{\begin{array}[b]{r}830\\ -\ 110\end{array}}{\space }$

Possible Answers:

723

720

722

721

Correct answer:

720

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:

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

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

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

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

$\frac{\begin{array}[b]{r}8\\ -\ 1\end{array}}{\ \ \ 7}$

Your final answer should be 720

$\frac{\begin{array}[b]{r}830\\ -\ 110\end{array}}{\ \ \ 720}$

Report an Error

Example Question #9 : Subtracting Multi Digit Numbers

Solve:

$\frac{\begin{array}[b]{r}697\\ -\ 335\end{array}}{\space }$

Possible Answers:

362

363

361

360

Correct answer:

362

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:

$\frac{\begin{array}[b]{r}7\\ -\ 5\end{array}}{\ \ \ 2 }$

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

$\frac{\begin{array}[b]{r}9\\ -\ 3\end{array}}{\ \ \ 6 }$

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

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

Your final answer should be 362

$\frac{\begin{array}[b]{r}397\\ -\ 335\end{array}}{\ \ \ \ 362}$

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Example Question #1 : Subtracting Multi Digit Numbers

Solve:

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

Possible Answers:

154

153

152

155

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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Common Core: 4th Grade Math : Subtracting multi-digit numbers

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

All Common Core: 4th Grade Math Resources

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Example Question #1 : Subtracting Multi Digit Numbers

Example Question #2 : Subtracting Multi Digit Numbers

Example Question #3 : Subtracting Multi Digit Numbers

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Example Question #6 : Subtracting Multi Digit Numbers

Example Question #7 : Subtracting Multi Digit Numbers

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Example Question #1 : Subtracting Multi Digit Numbers

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