DS is in Y1 which I think is the equivalent. I think the money idea is a good one. Talk about the value of coins - one of DS's homeworks was coin rubbing. They also practice counting in 2s and 10s. And he had recent homework on doubling.
I would say though that reading is something that benefits from regular practice. How far behind is your DD? When DS doesn't have a school reading book for whatever reason we read the M&S First Readers or the Ladybird Read it Yourself books.
The other thing I would say though is to try and get more answers out of the school.