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To solve this subtraction problem using vertical subtraction, we will follow these steps:
Step 1: Write the numbers in their respective place values, aligning the digits vertically based on units, tens, etc.
Step 2: Begin subtracting from the rightmost column (the units column).
Subtracting each column, starting with the rightmost:
- Units place: : Since 4 is smaller than 7, we borrow 1 from the tens place (making it 14), then subtract to get .
- Tens place: After borrowing, we have .
- Hundreds place: : Again, we borrow from the thousands place, making it 12. Thus, .
- Thousands place: After borrowing, we have .
- Ten-thousands place: : Borrow from the hundred-thousands place, resulting in .
- Hundred-thousands place: Finally, after borrowing.
Therefore, carrying out the subtraction yields the result:
This matches the correct answer choice.
The solution to the subtraction problem is .
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When borrowing from zero, you need to keep borrowing left until you reach a non-zero digit. For example, if you have 1000-1, borrow from the thousands: 1000 becomes 0999, then subtract normally.
Most mistakes happen when borrowing or aligning digits incorrectly. Double-check that you've placed each digit in the correct column and reduced borrowed digits by 1.
The best way is addition! Add your answer to the number you subtracted. If you get the original number, you're correct: ✓
No! You only borrow when the top digit is smaller than the bottom digit. If 8-3, no borrowing needed. If 4-7, then you must borrow.
If you make a borrowing mistake, it affects all remaining columns. Start over or carefully check each step. Mark your borrowing clearly: cross out the original digit and write the new one above.
Borrowing marks help you track changes and avoid mistakes! They also show your teacher you understand the process, not just the final answer.
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