Question

Which list is in order from least to greatest?

Answer 1

The first selection

Explanation:

Positive numbers in scientific notation (1 digit left of the decimal point) can be ordered by their exponents. Hence a number with a -6 exponent is smaller than a number with a -2 exponent.

Numbers with the same exponent can be ordered by their mantissa. 6 is less than 8.1.

The list that has the numbers in order least to greatest is the first one.

Answer 2

Student005,

In order to find the answer you need to convert each notation into standard form then order them into least to greatest.

• 
  `1.94 * 10^(-5) = .0000194`
• 
  `1.25 * 10^(-2) = .0125`
• 
  `6 * 10^(4) = 6000.`
• 
  `8.1 * 10^(4) = 81000.`

Therefore your answer is option A "1.94 × 10^-5, 1.25 × 10^-2, 6 × 10^4, and 8.1 × 10^4."

Hope this helps!