
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
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December 11th, 2018, 07:00 AM  #1 
Newbie Joined: Dec 2018 From: Florida Posts: 2 Thanks: 0  Why does 0.2^4=0.0016 ?
Where do the extra zeros come from

December 11th, 2018, 07:16 AM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,949 Thanks: 1555 
note $0.2 = 2 \times 10^{1}$ $(2 \times 10^{1})^4 = 2^4 \cdot (10^{1})^4 = 16 \times 10^{4} = 0.0016$ Last edited by skeeter; December 11th, 2018 at 07:38 AM. 