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When you take zero away, the number stays the same.

When you take zero away, the number stays the same.

Taking away nothing changes nothing. So 6 − 0 is still 6. Zero is a very polite number to subtract!

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Thêm điều thú vị về Phép trừ cơ bản

Subtracting means taking some away to get a smaller number. Subtracting means taking some away to get a smaller number. The minus sign (−) tells you to take away. The minus sign (−) tells you to take away. If you take a number away from itself, you are left with zero. If you take a number away from itself, you are left with zero. Subtraction is the opposite of addition — it undoes it. Subtraction is the opposite of addition — it undoes it. You can check subtraction by adding the answer back. You can check subtraction by adding the answer back.