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To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: Align the numbers:
Step 2: Add the digits in the ones place:
. Write 2 below the line in the ones place, carry over 1 to the tens place.
Step 3: Add the digits in the tens place, including the carry:
. Write 7 below the line in the tens place.
Step 4: Add the digits in the hundreds place:
Since there is no carry here, it's . Write 8 in the hundreds place.
Therefore, the sum is , which corresponds to choice 1.
872
\( \begin{aligned} &12 \\ +& \\ &~~2 \\ &\underline{\phantom{776}} & \\ \end{aligned} \)
When two digits add up to 10 or more, you write down the ones digit and carry the tens digit to the next column. For example, 5 + 7 = 12, so write 2 and carry the 1.
Aligning by place value ensures you're adding ones to ones, tens to tens, and hundreds to hundreds. Misalignment leads to completely wrong answers!
Treat it as zero! In this problem, 27 has no hundreds digit, so it's really 027. Add 8 + 0 = 8 in the hundreds place.
Carry over whenever the sum of digits in any column is 10 or greater. The tens part goes to the next column, and the ones part stays in the current column.
It's possible but much harder! Adding from right to left (ones to hundreds) makes carrying over easier to track and prevents mistakes.
That's normal! Just handle one column at a time, carrying over as needed. Remember to add any carried digit when working on each new column.
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