Question

Which number is not in scientific notation?

three point four times ten to the negative first power

zero point four times ten to the fifth power

one point nine eight times ten to the negative twentieth power

eight times ten to the twelfth power

Answer 1

scientific notation is

N.N... * 10^n

in other words the first number must be >=1 and < 10

Answer 2

so for example 3.9 * 10^3 is correct
but

0.9 * 10^3 is incorrect

Answer 3

'correct' meaning coreect scientific notation

Answer 4

so can you pick out the option which is not scientific notation?

Answer 5

so this is the answer? eight times ten to the twelfth power

Answer 6

no 8 * 10^12 is s scientific notation because 8 is in the region >=1 and < 10

Answer 7

* range not region

which option has the first number outside this range?

Answer 8

Oh i understand so zero point four times ten to the fifth power
is the answer

Answer 9

right!