Calculate the Sum: 857 + 23 in Vertical Format

857+  23776‾ \begin{aligned} &857 \\ +& \\ &~~23 \\ &\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 we calculate the sum of 2 digits, and then we place
00:06 Let's start by adding ones with ones
00:09 Place the ones, and add 1 to the tens
00:14 Add tens with tens, remember to add 1 to the calculation
00:19 Place in the tens
00:22 Place 0 in the missing digits
00:25 Add hundreds with hundreds, place in hundreds
00:28 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

857+  23776‾ \begin{aligned} &857 \\ +& \\ &~~23 \\ &\underline{\phantom{776}} & \\ \end{aligned}

2

Step-by-step solution

To solve this problem, we'll use vertical addition step-by-step:

  • Step 1: Write the numbers 857 and 23 in a column aligned by place values.
  • Step 2: Add starting from the rightmost column (units), moving left:
    • Units: 7 + 3 = 10. Write 0 and carry over 1 to the tens place.
    • Tens: 5 + 2 + 1 (carried over) = 8. Write 8 with no carry-over.
    • Hundreds: 8 + 0 = 8. Write 8.
  • Step 3: The final sum is 880.

Therefore, the sum of 857 and 23 is 880 880 .

The correct choice is Choice 4: 880 880 .

3

Final Answer

880

Practice Quiz

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

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