Przypomnijmy: $I-1$ $V-5$ $X-10$ $\text{L}-50$

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Uzupełnijmy zapisy.

E.

$\underset{209}{\underbrace{\underset{200}{\underbrace{\text{CC}}}\underset{9}{\underbrace{\text{IX}}}}}-\underset{3}{\underbrace{\text{III}}}=\underset{206}{\underbrace{\underset{200}{\underbrace{\text{CC}}}\underset{6}{\underbrace{\text{VI}}}}}$

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Y.

$\underset{69}{\underbrace{\underset{60}{\underbrace{\text{LX}}}\underset{9}{\underbrace{\text{IX}}}}}-\underset{55}{\underbrace{\text{LV}}}=\underset{14}{\underbrace{\underset{10}{\underbrace{\text{X}}}\underset{4}{\underbrace{\text{IV}}}}}$

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Z.

$\underset{526}{\underbrace{\underset{500}{\underbrace{\text{D}}}\underset{26}{\underbrace{\text{XXVI}}}}}-\underset{101}{\underbrace{\text{CI}}}=\underset{425}{\underbrace{\underset{400}{\underbrace{\text{CD}}}\underset{25}{\underbrace{\text{XXV}}}}}$

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Z.

$\underset{123}{\underbrace{\underset{100}{\underbrace{\text{C}}}\underset{23}{\underbrace{\text{XXIII}}}}}-\underset{108}{\underbrace{\underset{100}{\underbrace{\text{C}}}\underset{8}{\underbrace{\text{VIII}}}}}=\underset{15}{\underbrace{\underset{10}{\underbrace{\text{X}}}\underset{5}{\underbrace{\text{V}}}}}$

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T.

$\underset{16}{\underbrace{\underset{10}{\underbrace{\text{X}}}\underset{6}{\underbrace{\text{VI}}}}}-\underset{4}{\underbrace{\text{IV}}}=\underset{12}{\underbrace{\underset{10}{\underbrace{\text{X}}}\underset{2}{\underbrace{\text{II}}}}}$

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S.

$\underset{25}{\underbrace{\underset{20}{\underbrace{\text{XX}}}\underset{5}{\underbrace{\text{V}}}}}-\underset{9}{\underbrace{\text{IX}}}=\underset{16}{\underbrace{\underset{10}{\underbrace{\text{X}}}\underset{6}{\underbrace{\text{VI}}}}}$

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Uzupełnijmy tabelkę:

$\text{CDXXV}=425$	$\text{CCVI}=206$	$\text{XVI}=16$	$\text{XV}=15$	$\text{XIV}=14$	$\text{XII}=12$
Z	E	S	Z	Y	T