How do you write 67.2 million in scientific notation?

1 Answer
Sep 17, 2016

Answer:

#67.2# million is #6.72xx10^7# in scientific notation.

Explanation:

In scientific notation, we write a number so that it has single digit to the left of decimal sign and is multiplied by an integer power of #10#.

Note that moving decimal #p# digits to right is equivalent to multiplying by #10^p# and moving decimal #q# digits to left is equivalent to dividing by #10^q#.

Hence, we should either divide the number by #10^p# i.e. multiply by #10^(-p)# (if moving decimal to right) or multiply the number by #10^q# (if moving decimal to left).

In other words, it is written as #axx10^n#, where #1<=a<10# and #n# is an integer.

Now #67.2# million is #67.2xx1000000#

= #6.72xx10000000#

= #6.72xx10^7#