Topic Details

Level: Level 6: Advanced Addition & Subtraction

Topic: Subtraction with larger numbers

Description:

Subtraction with larger numbers involves subtracting numbers that are bigger than the ones you used before, such as numbers with two or more digits. Just like with addition, you can use column subtraction to help you break the process into smaller steps. When subtracting larger numbers, sometimes you need to borrow from the next column if the top number is smaller than the bottom number.

Here's how to do it:

Examples:

Example 1:
Problem: Subtract 542 - 276.
Solution:

        542
      - 276
      ------
    
Start with the ones place (2 - 6). Since 2 is smaller than 6, we need to borrow 1 from the tens column.
The tens column becomes 3 (because 4 becomes 3 when you borrow 1), and the ones column becomes 12.
Now, subtract 12 - 6 = 6.
Next, subtract the tens place (3 - 7). Since 3 is smaller than 7, borrow 1 from the hundreds column.
The hundreds column becomes 4, and the tens column becomes 13. Now, subtract 13 - 7 = 6.
Finally, subtract the hundreds place (4 - 2) = 2.
The answer is 266.

Example 2:
Problem: Subtract 1035 - 478.
Solution:

        1035
      -  478
      ------
    
Start with the ones place (5 - 8). Since 5 is smaller than 8, borrow 1 from the tens column.
The tens column becomes 2, and the ones column becomes 15. Now, subtract 15 - 8 = 7.
Now, subtract the tens place (2 - 7). Since 2 is smaller than 7, borrow 1 from the hundreds column.
The hundreds column becomes 0, and the tens column becomes 12. Now, subtract 12 - 7 = 5.
Finally, subtract the hundreds place (0 - 4). Since 0 is smaller than 4, borrow 1 from the thousands column.
The thousands column becomes 0, and the hundreds column becomes 10. Now, subtract 10 - 4 = 6.
The answer is 557.

Subtracting larger numbers is a very useful skill in math and in everyday life. As you practice, you’ll get better at borrowing and solving subtraction problems quickly!

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