MMario,

Thanks, I knew I had seen something of those numbers here, but couldn't find anything on the search. And the other sites are great, too. Our copies go up to 20, and interestingly group numbers in fives. As if they go one, two, three, four, five, six, seven, eight, nine, ten, one-ten, two-ten, three-ten, four-ten, fifteen, one-fifteen, two-fifteen, three-fifteen, four-fifteen, twenty. One of the printed versions at school has inadvertently omitted fifteen, and we're going to get the children to deduce the missing word by comparison with other versions.

Penny