Question

30 x 10'-8 in scientific notation

Answer 1

scientific notation is when the first number (mantisa) needs to be a one-digit number. ie: 8.0 * 10^2 instead of 80. So you need to divide 30 by 10 and add another power to the 10^# . But the # on the 10^ is negative, so when you add a positive number to a negative number, you get a larger number, not a smaller one.