• Echte und unechte Brüche
  • MNWeG
  • 19.12.2022
  • Mathematik
  • Bruchrechnen
  • M (Mindeststandard)
  • 7
  • Information
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Echte Brü­che

De­fi­ni­ti­on

Echte Brü­che sind Brü­che, deren Wert < 1\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} 1 ist.



Man er­kennt dies daran, dass der Zäh­ler klei­ner als der Nen­ner ist:



34\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} \bold{\frac{3}{4}}
=3:4=0,75\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} =3:4=0{,}75
79\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} \bold{\frac{7}{9}}
=7:9=0,77777777777...\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} =7:9=0{,}77777777777...
1321\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} \bold{\frac{13}{21}}
=13:21=0,619047619...\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} =13:21= 0{,}619047619...

Un­ech­te Brü­che

De­fi­ni­ti­on

Un­ech­te Brü­che sind Brü­che, deren Wert ≥ 1\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} 1 ist.



Man er­kennt dies daran, dass der Zäh­ler grö­ßer als der Nen­ner ist:



43\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} \bold{\frac{4}{3}}
=4:3=1,333333333...\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} =4:3=1{,}333333333...
97\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} \bold{\frac{9}{7}}
=9:7=1,2857142857...\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} =9:7= 1{,}2857142857...
2113\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} \bold{\frac{21}{13}}
=21:13=1,6153846154...\gdef\cloze#1{{\raisebox{-.05em}{\colorbox{none}{\color{transparent}{\large{$\displaystyle #1$}}}}}} =21:13= 1{,}6153846154...
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