### Home > CC4 > Chapter 2 > Lesson 2.1.4 > Problem2-42

2-42.

Which of the numbers below are correctly written in scientific notation? For each that is not, rewrite it correctly. Homework Help ✎

1. $4.51\times10^{−2}$

1. $0.789\times10^5$

1. $31.5\times10^2$

1. $3.008\times10^{−8}$

Review the Math Notes box in Lesson 1.3.1.