The questions on this page all relate to counting on to the next whole ten. To begin with children will start at the number and count on in ones (often using fingers to help). As confidence grows they might notice that to count on 5 from a 2-digit number with 5 in the units will always take them to the next whole ten.
The patterns of numbers:
1 and 9
2 and 8
3 and 7
4 and 6
5 and 5