Subtract column by column: Ones, Tens, Hundreds. Example: 567 - 234. Ones: 7-4=3. Tens: 6-3=3. Hundreds: 5-2=3. Answer: 333. Always subtract the smaller number from the larger in each column when no borrowing needed. Practice: 875-213=? 964-521=? Check your answer by adding back!
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