CORRECTION LES UNITES DE LONGUEUR Exercice 1 a. 628 mm = 6 dm + 2 cm 8 mm b. 46 cm = 4 dm + 6 dm c. 64 dm = 6 m + 4 dm d. 7 325 mm = 7 m + 3 dm + 2 cm + 5 mm Exercice 2 a. 20 m = 200 dm b. 2,5 m = 2 500 mm c. 2 cm = 20 mm d. 12 cm = 0,12 m Exercice 7 a. 25...
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CORRECTION LES UNITES DE LONGUEUR Exercice 1 a. 628 mm = 6 dm + 2 cm 8 mm b. 46 cm = 4 dm + 6 dm c. 64 dm = 6 m + 4 dm d. 7 325 mm = 7 m + 3 dm + 2 cm + 5 mm Exercice 2 a. 20 m = 200 dm b. 2,5 m = 2 500 mm c. 2 cm = 20 mm d. 12 cm = 0,12 m Exercice 7 a. 25 km = 250 hm = 2 500 dam = 25 000 m b. 3 500 hm = 35 000 dam = 350 km = 350 000 m c. 72,5 dam = 725 m = 7,25 hm = 0,725 km d. 165,6 hm = 1656 dam = 16,56 km = 16 560 m Exercice 8 a. 1 dam + 5m = 15 m b. 2 hm + 4 dam = 24 dam c. 1 km + 5hm = 15 hm d. 4 km + 6 m = 4 006 m
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