Scientific notation means -- one digit before the decimal point, all the others after it; -- count jow many places you have to move the decimal point to make the number look like that; -- left is positive, right is negative; -- after the digits, write " x 10 to the power of" that number from moving the point. / / / / You're starting with 0.006468 . You want it to be 6.468 . You have yo move the decimal point 3 places to the right ... that makes the power -3 . Finally, in scientific notation, it's 6.468 x 10 to the -3 power.