Broken calculator

I have a calculator that fell about a foot onto the floor it bow won't turn on I'm not sure what to do any suggestions will ne helpful I have mocks in a week

ah oh no that sounds so unfortunate!! Have you tried explaining to your teacher/tutor and see if they have a spare one they can lend you for the mocks? most maths classrooms have calculators, so I'm sure if you explain what happened and that you need to borrow one for your mocks... other than that I would order a new one ASAP!