## Prealgebra (7th Edition)

Published by Pearson

# Appendix C - Exercise Set - Page 746: 28

0.20

#### Work Step by Step

$(5\times10^{6})(4\times10^{-8})$ $\longrightarrow$ associative property =$(5\times4)(10^{6}\times10^{-8})$ $\longrightarrow$ multiply; add exponents if the base is the same =$20\times10^{-2}$ $\longrightarrow$ move the decimal 19 places to the left =$0.20$

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