Question

1 Scrieti urmatoarele numere ca numere naturale in sistemul zecimal:
a) 2 x 10 la a 3 + 5 x 10 la a 2 + 7 x 10 + 1

Answer 1

$2\times 10^3+5\times 10^2 +7\times 10+1\\10(2\times 10^2+5\times 10+7)+1\\10(200+50+7)+1\\10\times 257+1=2570+1=2571$

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