(a) We know that,

1000 g = 1 kg

Therefore,

2 g = kg

= 0.002 kg

(b) We know that,

1000 g = 1 kg

Therefore,

100 g = kg

= 0.1 kg

(c) We know that,

1000 g = 1 kg

Therefore,

3750 g = kg

= 3.750 kg

(d) We know that,

1000 g = 1 kg

Therefore,

5 kg 8 g = (5 + ) kg

= 5 + 0.008 kg

= 5.008 kg

(e) We know that,

1000 g = 1 kg

Therefore,

26 kg 50 g = (26 + ) kg

= 26 + 0.050 kg

= 26.050 kg