Skill: Add zero

Explanation and Free Practice Resources

Adding zero to a whole-number quantity does not change its value: for sums within 20, $a+0=a$ and $0+a=a$ . This identity can be interpreted as taking no additional steps on a number line or combining a set with an empty set, supporting accurate equation reading and later fluency with place value and more general properties of addition; negative numbers and abstract algebraic generalizations are not included.

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Detailed Explanation: Add zero

When you add zero, the number stays the same. Zero means none.

For example, solve:

7+0=?

Start with $7$ .
Add $0$ , which means take no steps forward on the number line.
You are still at $7$ .

So,

7+0=7

The answer is 7.

Learn by doing: Add zero

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Addition - Whole Number - Add 0 - Column

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