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To solve this problem, we'll perform vertical addition as follows:
Step 1: Align the numbers by columns (units, tens, hundreds).
Step 2: Add the digits from the rightmost column to the leftmost:
- Units place: Add 1 and 7, which equals 8. No carry is needed here.
- Tens place: Add 8 and 0, which equals 8. No carry is needed here.
- Hundreds place: Add 2 and 5, which equals 7. No carry is needed here.
Therefore, the sum of and is .
The solution to the problem is .
788
\( \begin{aligned} &90 \\ +& \\ &~~9\\ &\underline{\phantom{776}} & \\ \end{aligned} \)
We start from the ones place (rightmost column) because if there's any carrying needed, it moves left to the next higher place value. This prevents confusion and ensures accuracy!
When a column sum exceeds 9, write the ones digit below and carry the tens digit to the next left column. For example: 7+8=15, so write 5 and carry the 1.
Make sure each column has the same place value: ones under ones, tens under tens, hundreds under hundreds. The rightmost digits should always be aligned vertically.
Yes! Addition is commutative, so gives the same result as . The vertical format just makes it easier to organize.
Treat missing digits as zeros. For example, if adding 281 + 57, think of it as 281 + 057 to maintain proper alignment in all columns.
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