Sagot :
Réponse :
bonjour
3 x 200 = 600 dm² = 6 m²
2 dam² - 30 m² = 200 - 30 = 170 m²
2.3 a = 230 m²
100 * 35 = 3500 cm² = 0.35 m²
8 * 5 = 40 dam² = 4000 m²
150 dm² + 5 m² = 1.5 + 5 = 6.5 m²
Explications étape par étape
Bonjour,
a) 3 x 200 dm² = 600dm² = 6 m²
b) 2 dam² - 30 m²=
200m² - 30 m² => 170m²
c) 2,3 a = 230m²
d) 100 x 35 cm² = 3 500 cm² = 0,35m²
e) 8 x 5 dam² = 40 dam² = 4 000m²
f) 150 dm² + 5m²=
1,5m² + 5m² = 6,5m²