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Thankyou so much. I do understand most of what you have said. Im only just getting my head around this science stuff but the mathematics part is the bane of my life at the moment. Im sooo confused with it all. Claire Ok, gonna have a go here DrP So, if 1 and 4 is 2 sig fig of 136,500,00 then 3 sig fig would be 137 then 4 sig fig would be 1365 have no idea if im fighting a losing battle here or not

Hey guys. Wonder if you can help me. I dont expect answers but im struggling on significant figures and scientific notations. The figure i have come up with as being the answer is 136500000 I need to put this to 2 significant figures and also use scientific notation in my answer. can someone please help me. It would be much appreciated. Claire