Question

$5 \times {10}^{3} + 2 \times {10}^{2} + 7 \times {10}^{1} + 8 \times {10}^{0} + 2 \times {10}^{ - 2} + 9 \times {10}^{ - 3}$
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Answer 1

Olá  ㋡

$5 \ \times \ 10^{3} \ + \ 2 \ \times \ 10^{2} \ + \ 7 \ \times \ 10^{1} \ + \ 8 \ \times \ 10^{0} \ + \ 2 \ \times \ 10^{-2} \ + \ 9 \ \times \ 10^{-3} \\\\ 5 \ \times \ 1.000 \ + \ 2 \ \times \ 100 \ + \ 7 \ \times \ 10 \ + \ 8 \ \times \ 1 \ + \ 2 \ \times \ 0,1 \ + \ 9 \ \times \ 0,01 \\\\ 5.000 \ + \ 20 \ + \ 70 \ + \ 8 \ + \ 0,2 \ + \ 0,09 \\\\ 5.098 \ + \ 0,29 \\\\ \boxed{ \boxed{ 5.098,29 } }$  

Espero ter ajudado ♞