Answer Key for Lesson 14 Subtracting Three-Digit Numbers

Start by carefully aligning the digits in each column, ensuring that units, tens, and hundreds are correctly placed. Pay special attention to borrowing when the digit in the top row is smaller than the one beneath it. In such cases, subtract from the next higher place value and adjust accordingly.

Next, verify each calculation step. After borrowing, check that the remaining digits are properly reduced. Take extra care to avoid skipping any intermediate steps, as it can lead to incorrect results.

When you’re done, confirm your solution by adding the difference to the original number. If the sum equals the minuend, your calculation is accurate. Practicing this method will make these types of problems quicker and easier to solve in the future.