Examples with solutions for Vertical Addition: Addition of 3-digit and 2-digit numbers with some regrouping

Exercise #1

amp;156+amp;amp;254amp;776amp; \begin{aligned} &156 \\ +& \\ &254 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

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

  • Step 1: Add the digits in the units column.
  • Step 2: Add the digits in the tens column, including any carry from the units column.
  • Step 3: Add the digits in the hundreds column, including any carry from the tens column.

Now, let's work through each step:

Step 1: Adding Units
- Consider the rightmost column (units place). We add the digits: 66 (from 156) and 44 (from 254).
- 6+4=106 + 4 = 10.
- We write down 00 in the units place and carry over 11 to the tens place.

Step 2: Adding Tens
- Move to the next column on the left (tens place). We add the digits: 55 (from 156), 55 (from 254), plus the carry-over 11 from the previous step.
- 5+5+1=115 + 5 + 1 = 11.
- We write down 11 in the tens place and carry over 11 to the hundreds place.

Step 3: Adding Hundreds
- Move to the hundreds column. We add the digits: 11 (from 156), 22 (from 254), plus the carry-over 11.
- 1+2+1=41 + 2 + 1 = 4.
- We write down 44 in the hundreds place.

Putting it all together, the sum of 156+254=410156 + 254 = 410.

Therefore, the solution to the problem is 410 410 .

Answer

410

Exercise #2

amp;247+amp;amp;363amp;776amp; \begin{aligned} &247 \\ +& \\ &363 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

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

  • Step 1: Add the digits in the units place:
    7+3=107 + 3 = 10. Write down 0 and carry over 1 to the tens place.
  • Step 2: Add the digits in the tens place including the carried over 1:
    4+6+1=114 + 6 + 1 = 11. Write down 1 and carry over 1 to the hundreds place.
  • Step 3: Add the digits in the hundreds place including the carried over 1:
    2+3+1=62 + 3 + 1 = 6.

Therefore, the solution to the problem is 610 610 .

Answer

610

Exercise #3

amp;434+amp;amp;376amp;776amp; \begin{aligned} &434 \\ +& \\ &376 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

To solve this addition problem, we will use vertical addition, adding each place value step-by-step:

  • Step 1: Add the units place
    Add the digits in the units place: 4+6=104 + 6 = 10.
    Write down 0 and carry over 1 to the tens column.
  • Step 2: Add the tens place
    Add the digits in the tens place along with the carry: 3+7+1=113 + 7 + 1 = 11.
    Write down 1 and carry over 1 to the hundreds column.
  • Step 3: Add the hundreds place
    Add the digits in the hundreds place along with the carry: 4+3+1=84 + 3 + 1 = 8.
    Write down 8.

After performing these steps, the final result of the addition is 810810.

810

Answer

810

Exercise #4

amp;712+amp;amp;198amp;776amp; \begin{aligned} &712 \\ +& \\ &198 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Step-by-Step Solution

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

  • Step 1: Add the units digits: 2 (from 712) + 8 (from 198) = 10. Write down 0 and carry over 1 to the tens place.
  • Step 2: Add the tens digits and the carry: 1 (carry) + 1 (from 712) + 9 (from 198) = 11. Write down 1 and carry over 1 to the hundreds place.
  • Step 3: Add the hundreds digits and the carry: 1 (carry) + 7 (from 712) = 8 and 2 from 198 is not used here, we have already accounted it. Write down 9 as the total.

Thus, the final result of adding 712 and 198 is 910 910 .

Answer

910

Exercise #5

amp;728+amp;amp;182amp;776amp; \begin{aligned} &728 \\ +& \\ &182 \\ &\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 728728 and 182182 vertically by their respective place values (ones, tens, hundreds).

  • Step 2: Add the digits in each column starting from the ones place and moving to the left (tens, then hundreds), carrying as necessary.

Now, let's work through each step:
Step 1: The numbers are aligned as follows:

amp;7amp;2amp;8+amp;1amp;8amp;2 \begin{array}{c} & 7 & 2 & 8 \\ + & 1 & 8 & 2 \\ \hline \end{array}

Step 2: Start adding from the rightmost column (ones):

8+2=108 + 2 = 10. We write down the 00 and carry over the 11 to the tens column.

Next, add the tens column including the carried 11:

2+8+1=112 + 8 + 1 = 11. We write down the 11 and carry over the 11 to the hundreds column.

Finally, add the hundreds column including the carried 11:

7+1+1=97 + 1 + 1 = 9. Write the 99.

Therefore, the sum is 910910.

The solution to the problem is 910\boxed{910}.

Answer

910

Exercise #6

amp;376+amp;amp;234amp;776amp; \begin{aligned} &376\\ +& \\ &234 \\ &\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 vertically by their place values.
  • Step 2: Add each column starting from the right (ones place), carrying over if necessary.
  • Step 3: Compile the results to get the final sum.

Now, let's work through each step:

Step 1: Align the numbers: 376+234 \begin{array}{c} 376 \\ + 234 \\ \end{array}

Step 2: Add starting from the ones place:

  • Ones place: 6+4=106 + 4 = 10. Write down 00 and carry over 11.
  • Tens place: 7+3=107 + 3 = 10, plus the carry over 11 equals 1111. Write down 11 and carry over 11.
  • Hundreds place: 3+2=53 + 2 = 5, plus the carry over 11 equals 66. Write down 66.

Step 3: Compile the results: The sum is 610610.

Therefore, the solution to the problem is 610 610 .

Answer

610

Exercise #7

amp;555+amp;amp;255amp;776amp; \begin{aligned} &555 \\ +& \\ &255 \\ &\underline{\phantom{776}} & \\ \end{aligned}

Video Solution

Answer

810