How do you multiply any number in your head?

Hey everyone I realllly asap need help on this because I have a multiplication exam coming up and can u please explain in simple words because i am only in grade 5 and need help REALLY URGENTLY. I want to know how you can multiply ANY numbers in your head. What is a way. eg. to multiply 1888 x 5768. When i do it on... show more Hey everyone I realllly asap need help on this because I have a multiplication exam coming up and can u please explain in simple words because i am only in grade 5 and need help REALLY URGENTLY. I want to know how you can multiply ANY numbers in your head. What is a way. eg. to multiply 1888 x 5768. When i do it on paper i get the answer but how can I do these sums in my head. Any suggestions? Please put in any advice you have got. thanks
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