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When you add zero to a number, the number stays the same.

When you add zero to a number, the number stays the same.

Adding zero is like adding nothing at all. So 5 + 0 is still just 5. Zero is a very gentle number!

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Adding means putting groups together to make a bigger number. Adding means putting groups together to make a bigger number. The plus sign (+) tells you to put numbers together. The plus sign (+) tells you to put numbers together. You can add numbers in any order and get the same answer. You can add numbers in any order and get the same answer. Adding 1 to a number gives you the very next counting number. Adding 1 to a number gives you the very next counting number. Doubles are a magic trick — 5 plus 5 always makes 10! Doubles are a magic trick — 5 plus 5 always makes 10!