$4.2 \times 10^{-11}$ \text{ grams}

Question 1

Convert $0.000000000042$ to scientific notation.

Accepted Answer

$4.2 	imes 10^{-11}$

Question 2

Which of the following best describes the process for converting a small decimal like $0.000000000042$ to scientific notation?

Accepted Answer

Move the decimal point to the left until you have a number between 1 and 10, then count the number of moves as a negative exponent.

Question 3

A scientist measures the mass of a particle as $0.000000000042$ grams. Express this mass in scientific notation.

Accepted Answer

$4.2 	imes 10^{-11}$ 	ext{ grams}

Question 4

Which of the following numbers is equivalent to $4.2 	imes 10^{-11}$?

Accepted Answer

$0.000000000042$

Question 5

If you write $0.000000000042$ as $a 	imes 10^n$ in scientific notation, what are the values of $a$ and $n$?

Accepted Answer

$a = 4.2, n = -11$

Scientific Notation in College Algebra

Study Guide - Practice Questions