Multi-Digit Addition and Subtraction Math Example 2

Follow the full solution, then compare it with the other examples linked below.

Example 2

medium
Calculate \(803 - 457\) using column subtraction with borrowing.

Solution

  1. 1
    Ones: \(3 - 7\) needs borrowing. Borrow from tens (tens is 0, so borrow from hundreds).
  2. 2
    Hundreds becomes 7, tens becomes 9 (after lending 10), ones becomes 13.
  3. 3
    Ones: \(13 - 7 = 6\).
  4. 4
    Tens: \(9 - 5 = 4\).
  5. 5
    Hundreds: \(7 - 4 = 3\).
  6. 6
    Result: 346.

Answer

346
When borrowing across a zero (803), skip the tens and borrow from the hundreds: 800 → 790 + 13 in the ones place.

About Multi-Digit Addition and Subtraction

Adding and subtracting numbers with three or more digits using the standard algorithm, which involves regrouping (carrying) in addition and borrowing in subtraction.

Learn more about Multi-Digit Addition and Subtraction →

More Multi-Digit Addition and Subtraction Examples

Example 1 easy

Calculate (347 + 256) using column addition.

Example 3 easy

Calculate (528 + 364).

Example 4 medium

A school library has 1,250 books. They donate 387 books. How many books remain?

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