Convert the following quantities as indicated :

(a) 2500 kg = …………… metric tonne

(b) 150 kg = …………… quintal

(c) 10 lb = …………… kg

(d) 2500 g = …………… kg

(e) 0.01 kg = …………… g

(f) 5 mg = …………… kg

(a) 1 kg = 10^-3 metric tonne

⇒ 2500 kg = 2500 x 10^-3 metric tonne

⇒ 2500 kg = $\dfrac{2500}{1000}$ metric tonne = 2.5 metric tonne

(b) 1 kg = 10^-2 quintal

⇒ 150 kg = 150 x 10^-2 quintal

⇒ 150 kg = $\dfrac{150}{100}$ quintal = 1.5 quintal

(c) 1 lb = 0.45359 kg

⇒ 10 lb = 10 x 0.45359 kg = 4.5359 kg

(d) 1 g = 10^-3 kg

⇒ 2500 g = 2500 x 10^-3 kg

⇒ 2500 g = $\dfrac{2500}{1000}$ kg = 2.5 kg

(e) 1 kg = 1000 g

⇒ 0.01 kg = 0.01 x 1000 g = 10 g

(f) 1 mg = 1 x 10^-6 kg

5 mg = 5 x 10^-6 kg