martes, 12 de julio de 2011

Problema 33

$$0,6\cdot 10^4+6\cdot 10^3+0,06\cdot 10^5 = $$

a) $$18\cdot 10^9$$

b) $$1,8\cdot 10^4$$

c) $$18\cdot 10^4 $$

d) $$6,066\cdot 10^7 $$

e) $$6,66\cdot 10^{12} $$


SOLUCIÓN:

$$0,6\cdot 10^4+6\cdot10^3+0,06\cdot 10^5 = $$

$$=\frac{6}{10}\cdot 10\cdot 10^3+6\cdot10^3+\frac{6}{100}\cdot 10^2\cdot 10^3=$$

$$=6 \cdot 10^3+6\cdot10^3+\frac{6}{100}\cdot 100\cdot 10^3=$$

$$=6 \cdot 10^3+6\cdot10^3+6\cdot 10^3=$$

$$=18\cdot 10^3 = 18\cdot 10^{-1}\cdot 10^4 = $$

$$=18\cdot \frac{1}{10}\cdot 10^4= \frac{18}{10}\cdot 10^4 = 1,8\cdot 10^4$$

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