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