Solve Vertical Addition: 27 + 85 Step-by-Step

27+85776‾ \begin{aligned} &27 \\ +& \\ &85 \\ &\underline{\phantom{776}} & \\ \end{aligned}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Each time consider combining 2 digits, and then write
00:06 Start by adding ones with ones
00:09 Write down the ones, and remember 1 to carry up
00:12 Add tens with tens, remember to add 1 to the calculation
00:19 Write down the tens in the tens place, and carry 1 to hundreds
00:23 Write 0 in the missing digits
00:29 Add hundreds with hundreds, and write in the appropriate position
00:32 And this is the solution to the problem

Step-by-step written solution

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1

Understand the problem

27+85776‾ \begin{aligned} &27 \\ +& \\ &85 \\ &\underline{\phantom{776}} & \\ \end{aligned}

2

Step-by-step solution

To solve this problem, we'll follow the standard procedure for vertical addition:

  • Step 1: Write the numbers vertically, aligning by place value. Here, we have:

    27 27

    +85 +85

  • Step 2: Add the digits in the units place (rightmost column).
    7+5=12 7 + 5 = 12
    Since 12 is 10 or more, we write down 2 in the units place and carry over 1 to the tens place.
  • Step 3: Move to the tens place and add the digits, including the carryover from the previous step.
    2+8+1=11 2 + 8 + 1 = 11
    Write down 11 in the tens place, as there are no more numbers to add.

Therefore, the sum is 112 112 .

The correct answer is choice 3: 112.

3

Final Answer

112

Practice Quiz

Test your knowledge with interactive questions

\( \begin{aligned} &90 \\ +& \\ &~~9\\ &\underline{\phantom{776}} & \\ \end{aligned} \)

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