What is 0.000342 in scientific notation?

1 Answer
Jim G.
Jan 28, 2018

#3.42xx10^(-4)#

Explanation:

#"a number expressed in scientific notation has the form"#

#•color(white)(x)axx10^n#

#"where "1<=a<10" and n is an integer"#

#"to write "0.000342" as a number between 1 and 10"#

#"that is "3color(red)(•)42#

#"we now have to put the decimal point back where it "#
#"should be by moving it 4 places left"#

#• " a move to the left is denoted by n being negative"#

#• " a move to the right is denoted by n being positive"#

#rArr0.000342=3.42xx10^(-4)#

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