Question

efetue : 0,525x10^-1 - 2,25x10^-4

Answer 1

Olá!

    $0,525\times 10^{-1}-2,25\times 10^{-4} = \\ \\ = 525\times 10^{-3}\times 10^{-1}- 2,25\times 10^{-4} = 525\times 10^{-4}-2,25\times 10^{-4}=\\ \\ = 10^{-4}(525-2,25) = 10^{-4}\cdot 522,75 = 0,052275.$


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