1.7 Lösning 1d

$${10\,^5 \cdot\, 10\,^{-5} \over 10\,^{-2} \cdot\, 10\,^3} \, = \, {10\,^{5\,+\,(-5)} \over 10\,^{-2\,+\,3}} \, = \, {10\,^{5\,-\,5} \over 10\,^1} \, = \, {10\,^0 \over 10\,^1} \, = \, {1 \over 10} \, = \, 0,1$$