investigate multiples and link to tables including common multiples
investigate factors including factor pairs to give answers, including prime numbers
Watch the tutorial on Studyladder
Watch the tutorial on factoring @ https://mathantics.com/lesson/factoring
Complete the multiples and factors activities provided on Studyladder
Continuous practise of timestables to develop knowledge and speed of recall will always be beneficial. You can use whatever games or activities you wish to do this. See Extra Activities- Numeracy for useful links.