Examples with solutions for Vertical Addition: Addition of 3-digit and 1-digit numbers with the regrouping of both tens and ones

Exercise #1

amp;236+amp;amp;    7amp;776amp; \begin{aligned} &236 \\ +& \\ &~~~~7 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

To solve this problem, we'll perform vertical addition:

  • Align 236 and 7 by their units (rightmost digits).
  • Add the numbers starting from the rightmost digit (units), moving left:

Calculating step-by-step:
Step 1: Add the units digit. - Add 66 (units place of 236) and 77 (units place): 6+7=136 + 7 = 13.
- This requires regrouping since the sum is more than 99. Thus, write 33 in the units place and carry over 11 to the tens place.

Step 2: Add the tens digit. - Add the carry-over 11 to the tens digit of 236, 33: 1+3=41 + 3 = 4.
- Place 44 in the tens column.

Step 3: Add the hundreds digit. - There is only the hundreds digit 22 from 236, and no carry-over: Thus result is also 22 in the hundreds column.

Putting it all together, the sum is: 243243.

Therefore, the solution to the problem is 243243.

Answer

243

Exercise #2

amp;716+amp;amp;    8amp;776amp; \begin{aligned} &716 \\ +& \\ &~~~~8 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

To solve this problem, we need to add the two numbers, 716716 and 88, using vertical addition.

Step-by-step solution:

  • Step 1: Add the units place digits: 6+8=146 + 8 = 14. Here, 44 is written in the units place, and we carry over 11 to the tens place.

  • Step 2: Add the tens place digits: 1+1=21 + 1 = 2. As there was a carry from the previous step, the result is 22 in the tens place.

  • Step 3: Add the hundreds place digits: 7+0=77 + 0 = 7. There is no carry to add, so the hundreds place remains 77.

After combining these results, the number becomes 724724.

Therefore, the solution to the problem is 724724.

The correct answer choice is: Choice 4: 724724.

Answer

724

Exercise #3

amp;872+amp;amp;    9amp;776amp; \begin{aligned} &872 \\ +& \\ &~~~~9 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Add the ones place.
  • Step 2: Handle any carrying to the tens place.
  • Step 3: Add the tens place.
  • Step 4: Handle any carrying to the hundreds place.
  • Step 5: Add the hundreds place.

Now, let's work through each step:

Step 1: Consider the ones digits. For 872 and 9, the ones digits are 2 and 9.
Adding these gives us 2+9=112 + 9 = 11.

Step 2: In base-10 addition, if the sum of digits in a place (in this case, the ones place) exceeds 9, we carry over to the next leftward digit. Thus, we write 1 in the ones place and carry over 1 to the tens place.

Step 3: Now, we add the tens digits. For the tens, we have 7 (from 872) and the 1 from our carry over.
Thus, 7+1=87 + 1 = 8.

Step 4: After adding the tens digits, check if there's any carry over. Since 8 is not greater than 9, no further carrying is needed.

Step 5: Finally, add the hundreds place digits. For the hundreds, we have 8 (from 872), and there was no carry from the tens, giving 8+0=88 + 0 = 8.

Combining these sum results, we have the final sum as: Hundreds: 8
Tens: 8
Ones: 1
Therefore, the sum of 872 and 9 is 881881.

Therefore, the solution to the problem is 881881.

The choice that corresponds to this solution is Choice 4: 881881.

Answer

881

Exercise #4

amp;543+amp;amp;    8amp;776amp; \begin{aligned} &543 \\ +& \\ &~~~~8 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

To solve this problem, we'll perform the following steps in vertical addition:

1. Write the numbers vertically, aligning them by their place values:
543+    8776\begin{aligned} &543 \\ + &~~~~8 \\ &\underline{\phantom{776}} \end{aligned}

2. Begin with the units place (rightmost column):
Add 33 (from 543543) and 88, which equals 1111. Since this number is greater than 99, we have to regroup. Write down 11 and carry over 11 to the tens place.

3. Move to the tens place:
Add 44 (from 543543) plus the carry-over 11, which equals 55. Write 55 under the tens place column.

4. Finish with the hundreds place:
Add 55 (from 543543), and since there is no carry-over, write 55 under the hundreds place column.

Therefore, after completing the addition process, we have the result:

543+    8551\begin{aligned} &543 \\ + &~~~~8 \\ &\underline{551} \end{aligned}

The solution to the addition problem is 551 551 .

Answer

551

Exercise #5

amp;917+amp;amp;    5amp;776amp; \begin{aligned} &917 \\ +& \\ &~~~~5 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

To solve the problem of adding 917 and 5, follow these step-by-step instructions:

  • Step 1: Line up the numbers vertically by their place values. The hundreds place, tens place, and units place should be aligned:
  • 917+   5776\begin{aligned} &917 \\ +& \\ &~~~5 \\ &\underline{\phantom{776}} \\ \end{aligned}

  • Step 2: Begin with the units place (rightmost column). Add 77 and 55. The sum is 1212.
  • Since 1212 is greater than 99, we write down 22 and carry over 11 to the tens place.

  • Step 3: Proceed to the tens place. Add the digits 11 (the carried over value) and 11 (from 917). This gives us 22.
  • We write 22 in the tens place.

  • Step 4: Finally, add the hundreds place. Add 99 (from 917). As there is no shipment here due to the tens column sum, write the 99 directly.
  • After completing all the places, the final result is:

    917+   5922\begin{aligned} &917 \\ +& \\ &~~~5 \\ &\underline{922} \\ \end{aligned}

Therefore, the answer to the problem is 922\boxed{922}.

Answer

922

Exercise #6

amp;173+amp;amp;  18amp;776amp; \begin{aligned} &173 \\ +& \\ &~~18 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Align the numbers 173 and 18 by their rightmost digits. Write 173 above 18.
  • Step 2: Start adding from the ones column (rightmost). 3 (ones of 173) + 8 (ones of 18) = 11.
  • Step 3: Write down the 1 in the ones place and carry over the remaining 1 to the tens column.
  • Step 4: Move to the tens column. Add 7 (tens of 173) + 1 (tens of 18) = 8, plus the carried over 1 = 9.
  • Step 5: Write 9 in the tens place.
  • Step 6: Move to the hundreds column. Add 1 (hundreds of 173) with the carry, which is zero here, so it remains 1.

Therefore, the final sum of 173 and 18 is 191 191 .

Answer

191

Exercise #7

amp;276+amp;amp;  16amp;776amp; \begin{aligned} &276 \\ +& \\ &~~16 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

To solve this vertical addition problem, follow these steps:

  • Step 1: Align the numbers according to place value: hundreds, tens, and ones.
    The numbers are:
    276
    + 16

  • Step 2: Start adding from the rightmost column (the ones place):
    - Add 6 (from 276) and 6 (from 16) = 12.
    - Write down 2 in the ones place and carry over 1 to the tens place.

  • Step 3: Move to the tens column:
    - Add 7 (from 276), 1 (carried), and 1 (from 16) = 9.
    - Write down 9 in the tens place.

  • Step 4: Finally, move to the hundreds column:
    - Since there's no carried number here, add 2 (from 276) as it is.
    - Write down 2 in the hundreds place.

After performing these operations, the final sum is written as:

292

Therefore, the correct answer to the problem is 292 292 .

Answer

292

Exercise #8

amp;317+amp;amp;  45amp;776amp; \begin{aligned} &317 \\ +& \\ &~~45 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

To solve this problem, we'll carry out vertical addition:

  • Step 1: Add the rightmost digits (units place): 7+5=127 + 5 = 12. Since 12 is more than 9, we write 2 in the units place and carry over 1 to the tens place.
  • Step 2: Add the tens place along with the carried-over digit: 1+1+4=61 + 1 + 4 = 6. Write 6 in the tens place.
  • Step 3: Add the hundreds place: 3+(0 since there is no hundreds digit from 45)=33 + (0 \text{ since there is no hundreds digit from 45}) = 3. Write 3 in the hundreds place.

Therefore, the sum of the numbers 317 and 45 is 362\mathbf{362}.

The correct choice from the given options that matches this sum is choice 4: 362362.

Answer

362

Exercise #9

amp;728+amp;amp;  56amp;776amp; \begin{aligned} &728 \\ +& \\ &~~56 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

To solve this problem, we need to add the numbers 728 and 56 using vertical addition. Let's break this down step by step:

  • Step 1: Add the ones place digits. Here, we add 8+6=148 + 6 = 14. The digit 4 remains in the ones place, and we carry over the 1 to the tens place.
  • Step 2: Add the tens place. Now, add the tens digits, taking into account the carry-over: 2+5+1=82 + 5 + 1 = 8. Write 8 in the tens place.
  • Step 3: Add the hundreds place. Since there are no more digits to add to the hundreds place and no carry over, we keep the hundreds digit as is: 77.

Thus, the sum of 728 and 56 is 784784.

Therefore, the correct answer is choice 2: 784.

Answer

784