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To solve this vertical subtraction problem , let's go through the steps:
The final calculation looks like this:
Therefore, the result of the subtraction is .
19
\( \begin{aligned} &105 \\ -& \\ &~~~~3 \\ &\underline{\phantom{776}} & \\ \end{aligned} \)
Because place value matters! The 6 represents 6 ones, and you can't take away 7 ones from just 6 ones. You need to borrow from the tens place first.
The tens digit decreases by 1 because you're lending one ten (which equals 10 ones) to the units place. So 7 tens becomes 6 tens after borrowing.
Simple rule: If the top digit is smaller than the bottom digit in any column, you must borrow! Look at each column from right to left.
Yes! Add your answer to the number you subtracted. If you get the original number, you're correct: ✓
When borrowing from 0, you need to keep going left until you find a digit you can borrow from. The 0 becomes 10, then you borrow 1 from it.
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