Places to practise your multiplication tables
https://www.timestables.co.uk/
Dorling Kindersley has a free app called 'Ten Minutes a Day Times Tables'.
Time
Telling the time basics https://www.bbc.co.uk/bitesize/topics/zhk82hv/articles/zcmdwxs
Digital and analogue time https://www.bbc.co.uk/bitesize/topics/zkfycdm/articles/zcrmqty
The MyMaths apps are great! Have a look. Start with this one and gradually build your skills with the others. (You will need your passwords!)