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Just look at the last digit. If it's even, then the number is even. If it's odd, then the number is odd.

(The other digits tell you how many tens, hundreds, etc. Ten, or a multiple of ten - like seventy or eighty - is always even. Same goes for hundreds, thousands, etc.)

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15y ago

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Q: How can you tell if a number is even without dividing by 2?
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