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Risolvere un problema Leggere il testo per individuare i dati Dati numerici Dati relazionali Somma e differenza
Somma = 160 cm Differenza   = 20 cm
20cm 20cm 160 cm Somma totale 180 cm
90 cm 90 cm 20 cm 20 cm 70 cm (somma+differenza):2 = segmento + lungo (160 + 20):2 = 90 cm Segmento più lungo – differenza  = segmento più corto 90 – 20 = 70
160 – 20 = 140 cm 90 cm 20 cm 20 cm 70 cm (somma-differenza):2 = segmento più corto (160 - 20):2 = 70 cm Segmento più corto + differenza  = segmento più lungo 70 + 20 = 90
Somma : 2 – differenza : 2 = segmento più corto 160 : 2 – 20 : 2 = 70 cm Somma : 2 + differenza : 2 = segmento più lungo 160 : 2 + 20 : 2 = 90 160 : 2 = 80 20 : 2 = 10 80 + 10 = 90 80 – 10 = 70

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Somma E Differenza

  • 1. Risolvere un problema Leggere il testo per individuare i dati Dati numerici Dati relazionali Somma e differenza
  • 2. Somma = 160 cm Differenza = 20 cm
  • 3. 20cm 20cm 160 cm Somma totale 180 cm
  • 4. 90 cm 90 cm 20 cm 20 cm 70 cm (somma+differenza):2 = segmento + lungo (160 + 20):2 = 90 cm Segmento più lungo – differenza = segmento più corto 90 – 20 = 70
  • 5. 160 – 20 = 140 cm 90 cm 20 cm 20 cm 70 cm (somma-differenza):2 = segmento più corto (160 - 20):2 = 70 cm Segmento più corto + differenza = segmento più lungo 70 + 20 = 90
  • 6. Somma : 2 – differenza : 2 = segmento più corto 160 : 2 – 20 : 2 = 70 cm Somma : 2 + differenza : 2 = segmento più lungo 160 : 2 + 20 : 2 = 90 160 : 2 = 80 20 : 2 = 10 80 + 10 = 90 80 – 10 = 70