Answer:1. 0.45 mg = ____ g 1 mg = 0.001 g (divide by 1000) 0.45 × 0.001 (0.45 ÷ 1000) = 0.00045 g2. 22.7 dal = ____ cL 1 dal = 1000 cL 22.7 × 1000 = 22,700 cL3. 0.0013 cm = ____ hm 1 cm = 0.0001 hm (divide by 1000) 0.0013 × 0.0001 ( 0.0013 ÷ 10000) = 0.00000013 hm