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To solve this problem, we'll follow these steps:
Now, let's work through each step:
Starting with the units column:
. Since 13 is greater than 9, we write down 3 and carry over 1 to the tens column.
Next, in the tens column:
, and adding the carry over 1 gives us 14. Again, we write down 4 and carry over 1 to the hundreds column.
Finally, in the hundreds column:
, and adding the carry over 1 gives us 17. Here, we write down 17 as there are no other columns to carry over to.
Therefore, the final sum is .
To verify, let's match this result with the given choices. The correct choice is: .
1743
\( \begin{aligned} &90 \\ +& \\ &~~9\\ &\underline{\phantom{776}} & \\ \end{aligned} \)
When adding digits gives you a number 10 or greater, you write down the ones digit and carry the tens digit to the next column. For example, 6+7=13, so write 3 and carry the 1.
We start from the units column because that's where carrying begins! If you start from the left, you won't know what to carry over from the smaller place values.
Your answer will be wrong by multiples of 10! Always double-check each column to make sure you've added any carried digits from the previous step.
Try these methods:
That's totally normal! When adding large numbers, the sum often has one more digit than the original numbers. 986+757=1743 has 4 digits while the addends have 3 digits.
Yes! This column addition method works for any whole number addition problem, whether it's 2-digit, 3-digit, or even larger numbers. The steps stay exactly the same.
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