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N1/E3.1 How to recognise odd and even numbers All whole numbers are either odd or even - but not both! Even numbers An even number can be split into two equal (or even) groups. 8 slices of pizza can be shared evenly between two people. That is because 8 is an even number. Tip: the last digit of an even number is always 0, 2, 4, 6, or 8. Examples of even numbers: 14 78 2 132 8 76 890 500 550 1,924 34 2,346 Odd numbers An odd number cannot be split into two equal (or even) groups. 7 doughnuts cannot be shared evenly between two people. That is because 7 is an odd number. Tip: the last digit of an odd number is always 1, 3, 5, 7, or 9. Examples of odd numbers: 13 33 7 87 9 43 905 503 81 2,461 415 1,793 To help you remember: odd one out: something which is left out of a group odd sock: a sock without a matching partner even: equally balanced even-stevens: an equal score in a game or contest © BBC 2011