As the term is only a few weeks away from ending, it is really important to revise and practise skills that have been learned.
The following maths mats are differentiated. Decide which one is for your maths ability. (I have no problem with your doing all three, if you wish)
If you cannot remember how to do something, do some research and try reteaching yourself-I can guarantee, that as soon as you see how to do it, you will remember.