How do you write #7.2times10^5# in standard form?

1 Answer
Aug 3, 2016

Answer:

720 000

Explanation:

#7.2xx10^5" is already expressed in "color(blue)"standard form"#

I believe you mean express as #color(blue)"original number"#

To do this consider #10^5" or more generally" 10^n# where n is an integer.

• If n > 0 #color(red)"move decimal point n places to the right"#

• If n < 0 #color(blue)"move decimal point n places to the left"#

here n = 5 > 0, hence move decimal point 5 places to the right.

#rArr7color(red)(•)2to720000color(red)(•)#

#rArr7.2xx10^5=720 000#