Make sure that you work through the PowerPoint before you try the activity - they will rejog your memory to help you solve the problems on the worksheets.
You'll need to use BIDMAS for this task (brackets, indices -squared/cubed, division, multiplication, addition, subtraction).
Complete 'fluency' and then the 'reasoning and problem solving' worksheet. You must complete ALL six questions on each sheet.
Choose the appropriate worksheet for you.
D = Tricky
E = Trickier
GD = Trickiest