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Gagnvirk margföldunartafla

Author:
Jóhann Örn Sigurjónsson

Dragðu punktana til að finna margfeldi lengdar og breiddar

Margfeldi lengdar og breiddar er flatarmál rétthyrnings. Til umhugsunar:
  • Skiptir máli hvort þú margfaldar lengd með breidd eða breidd með lengd? Af hverju?
  • Hver er reglan fyrir flatarmál ljósbláa rétthyrningsins sem er fyrir ofan þann dökkgræna?

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