When I was at school in Scotland we used a series of books called Top 10 Metric Mental. Each year you had a different number and colour of book and then each morning you did 10 mental arithmetic questions at the same time as your spelling. The books were great at developing mental arithemtic ability.
I would be very keen to get hold of them or something similar for my DD - i cant find them on the intranet and wondered if anyone had heard of them or knows of something similar to help mental arithmetic as she is always wanting me to post mental arithemetic questions.
Thanks